South Africa's Ruined Synthetic Oil Giant
393 segments
South Africa’s Sasol is the world's only commercial-scale synthetic oil producer.
Founded in 1950, they convert millions of tons of oil from coal each year.
In 2011, high oil prices turned them into South
Africa's second most valuable company - with stock returns of 1000% since 2000.
Then they took a massive swing on a multi-billion megaproject in Louisiana.
It could have transformed them into an international chemicals giant.
Instead, it smashed them to bits. In today's video, South Africa's synthetic oil giant,
and the $13 billion US megaproject that ruined it.
## Beginnings One of the key reasons for Germany's defeat in
World War I was that the country had no significant oil reserves.
But Germany does have plenty of coal, especially a soft brown type called lignite. Being a younger
type coal, lignite has low carbon content and high moisture. It crumbles quite easy.
So after World War I, the government began researching possible ways to
turn these huge reserves of coal into oil.
In 1923, Franz Fischer and Hans Tropsch discovered a method of doing so.
It is named after them: the Fischer-Tropsch, or FT process.
FT is an indirect conversion. Meaning that we first turn coal
or natural gas into an intermediate product called
syngas. This is done by burning coal in the presence of oxygen and steam.
Syngas is primarily just hydrogen and carbon monoxide along with a bunch of contaminants.
The syngas is then purified of toxins and contaminants in a step called "cleanup-and-shift".
After this, we pass the syngas over a special catalyst - usually iron
and cobalt - at a moderate temperature and pressure inside a special reactor.
The syngas molecules break apart on the catalyst surface,
and then reassemble as chains of carbon and hydrogen. The end result is a
hodgepodge of liquid and gas hydrocarbon byproducts, including fuel oil or gas.
This chain reassembly process is random, but follows a distribution.
The output mix can be tweaked using various catalysts and conditions.
Various sides in World War II studied and implemented variants of the FT process,
as well as other coal-to-oil technologies. It was a critical
part of the German war machine. The Japanese built a few plants too.
And the United States also invested money into synthetic fuels - passing
the Synthetic Liquid Fuels Act of 1944 to augment oil supplies.
But even during the war and with massive German government tariffs,
synthetic oil was never economically competitive - costing about 2-3 times more than imports.
That disadvantage worsened after the war’s end and with the emergence of major oil discoveries
in the Middle East. The world shifted away from FT and it sort of faded. Except in South Africa.
## The First Plants
Like Germany, South Africa has large reserves of coal, but no oil.
So they followed developments in the coal-to-oil technology space over in Germany closely. They saw
it as a way to fulfill domestic energy needs while also building an industrial competence.
In the 1930s, a large South African mining conglomerate called the Anglo-Transvaal
Consolidated Investment Company, or Anglovaal, licensed the FT process
and through a subsidiary called SATMAR built the first synthetic oil plant in the country.
However, SATMAR's oil - made from an oil shale rock called torbanite - was only
competitive with the benefit of tariffs. The company lobbied the government for protections
and financial support of about 16 million South African pounds for a larger plant.
## The First Plant
The government was at first hesitant - still hoping to strike oil somewhere.
Until finally in 1947 they passed an act and formed an advisory board. But gradually,
it dawned upon them that if this was going to be economically competitive,
then it would have to be the single biggest industrial undertaking in the country's history.
Anglovaal for their part was struggling to raise capital overseas for the project.
Banks and economic development lenders questioned the economics
of the FT process even with the benefit of South Africa's cheap coal and labor.
The fundraising got harder after the National Party - led by the descendants of Dutch and
French settlers called Afrikaners - won the 1948 election, and began to set up apartheid.
It became increasingly clear that the project would require money
and industrial protections that only the government can provide. If so,
then the nationalist-minded Afrikaners believed that such an asset should be state owned.
A massive devaluation of the South African pound in 1949 made imports extremely
expensive - further crippling the company's ability to handle the project. So in the end,
the company decided to go back to mining gold.
Thusly the South African government acquired the FT process license from Anglovaal.
Then in September 1950 they established the company South African Synthetic Oil Limited,
or Sasol, through its Industrial Development Corporation, or IDC.
The official name was then changed to South African Coal, Oil, and Gas Company - because
some people thought the term "synthetic oil" drew uncomfortable comparisons with
"fake oil" and WW2 Germans. But Sasol stuck and it eventually became the official name anyway.
Sasol was celebrated as a step towards building a diversified,
powerful industrial economy. South Africa, proponents said, had enough "oil potential",
meaning coal, to last for the next 500 years. The end of the country's energy concerns.
## Building the First Plant
The company's founding board of directors and management team were quite competent. Stacked
with engineers and experts inherited from the old Anglovaal synthetic oil organization.
And because it was only indirectly owned by the government through the IDC,
it ran with largely little interference. Though Afrikaners did express concern
about over-representation of English speakers and foreigners amongst the ranks.
The company immediately faced struggles as it tried to build its first plant - which I
shall refer to as Sasol I - in 1952 with the aid of American engineers.
Sasol I ran two types of Fischer-Tropsch units. The first used a fixed-bed reactor
pretty much like the ones that the Germans used. Here,
the catalyst sits in tubes, and the syngas flows through and around it.
Five very large units of these were installed. Such reactors are simple and easy to run,
but tend to suffer heating issues. It also tends to produce more higher boiling
point materials like waxes and diesel oils. Less so stuff to make gasoline.
The second type reactor utilized an American design from MW Kellogg
called a fluid bed. Here, the reactor is filled with small,
almost sand-like catalyst particles. Syngas then bubbles through it like as if it were a fluid.
The fluid bed conceptually offered better mixing and superior thermal effects,
but had never been commercialized before. It was completed in early 1955. Products were delivered
in August and by November, Sasol employees were filling their cars with Sasol petrol.
But problems then forced a shut down in early 1956. After American and German experts failed
to troubleshoot, Sasol's own experts took over and did a redesign. The final working design,
completed in 1957, was uniquely South African:
The Sasol-Synthol process, an impressive technical achievement.
Sasol I was located in its own city called Sasolburg, about fifty miles outside Johannesburg.
It sits near a titanic coal mine and reservoir, providing the site with key raw materials.
By all measures, it was an impressive achievement. Nine "Lurgi" generators turning coal into syngas
for the fixed and fluid-bed reactors to turn into hydrocarbons. The build consumed
16 million man-hours, 80,000 cubic meters of concrete, and 320 kilometers of pipe.
## A Strategic Asset The thing also cost a whole lot of money:
100 million rand or about half a billion dollars today. A substantial overrun.
And despite having unprecedented economies of scale - Sasol I's
five fixed-bed reactors had the same capacity as 75 similar design
reactors used during World War II - the company still turned an operating loss.
Rather than trying to add more capacity to find economies of scale, Sasol instead
diversified into fertilizers, synthetic rubber, tars, chemicals, explosives and plastics.
The idea was to take advantage of the FT process's various hydrocarbon byproducts,
which presumably can be sold at higher value.
The company remained in the red throughout the 1960s. But the
government kept subsidizing Sasol with oil import tariffs and price
floor protections until eventually it showed a form of profitability.
This was all for strategic reasons. The South African Apartheid government
wanted to save foreign currency for other imports. It also believed that it might
one day lose its primary oil sources in the United States and Middle East.
In December 1958, the first All-Africa Peoples' Conference made the first call for a worldwide
trade and diplomatic boycott against South Africa for its racial segregation policies.
Then in 1960, police opened fire on a group of unarmed protestors opposing
Apartheid laws - the Sharpeville massacre. Between 69 to 90 people were killed.
The massacre triggered a massive uprising in the
South African Black population and international condemnation.
In 1964, the first oil-producing Middle East nation joined the boycott.
Kuwait broke all diplomatic and commercial relations with South Africa,
including oil shipments. Threats of further sanctions intensified.
## Sasol II and III
In 1973, the global energy crises propelled Sasol forward,
enabling it to build its largest complex yet.
OPEC's oil embargoes caused prices to finally close the gap between South
African imports and domestic synthetic oil, helping the company turn a sturdier profit.
Despite Sasol's relatively minor contribution to the country's overall oil supply - about
30% - increasing isolation and crisis moved the company to the center of South Africa's
energy policy. Its unique coal-to-oil style garnered attention from abroad.
It gave Sasol the oomph to finally make their next big expansion in 1974:
A second major plant called Sasol II.
Located in a new area called Secunda, Sasol II would have three times the
capacity of its predecessor. It also cost a staggering $3.2 billion.
Then as Sasol II neared completion in 1979,
the Shah of Iran fell. The new Iranian regime banned oil to South Africa - triggering a
major crisis because Iran provided 90% of the country's imported oil.
South Africa - to the dismay of many - evaded collapse thanks to
existing oil stockpiles and open market purchases at high prices.
But the panic motivated a third complex: Sasol III, located next to Sasol II in Secunda
and basically a clone of it. Building this complex would cost an estimated $3.8 billion.
To get the money, the increasingly impoverished South African government
privatized Sasol - selling a 70% stake into the Johannesburg public markets.
## A Weird Position In the decade following the privatization,
Sasol occupied this strange space between public and private.
On one hand, Sasol was a private company with many foreign investors. Yet on the other hand,
its core synthetic oil business heavily depended on government market intervention.
Including tariffs to artificially "adjust" the oil import price to
match the synthetic oil price, as well as guaranteed price floors.
Moreover, the company's position at the core of
the Apartheid state's energy policy put it in the crosshairs of activists. In 1980,
the refineries at Sasolburg and Secunda were both bombed by African nationalists.
The company also struggled with labor turmoil. Trade unions agitated for better working hours
and pay - striking in 1987 and 1989. Both times, the company cracked down with violence.
Finally in 1990, the National Party-led government turns from Apartheid. Black-led
political parties were unbanned, Nelson Mandela was released from
jail, and talks began - leading to the country's first free elections in 1994.
For Sasol, this meant massive change. In 1993,
41% of profits derived from its position in the protected oil market. With Apartheid
ending and economic sanctions lifting, this protected position would not last.
But the new ANC-led government opted for a slow phase-out of these subsidies,
giving Sasol's management some time to figure things out. So what then to do?
## Diversification
At first, Sasol considered exporting coal abroad. Sasolburg had a big underground coal mine.
But the wider coal industry rejected working with them because of the perception that
they would leverage their taxpayer subsidies to apply pricing pressure.
So instead, Sasol embarked on a broad diversification into petrochemicals. This
began with the 1995 acquisition of a wax business in Germany to form the division Sasol Wax.
And a merger of subsidiaries with another company in 1997
to form a joint venture producing aromatic chemicals like phenolics.
As well as two other acquisitions to create Sasol Nitro - a maker of ammonia,
fertilizers and things that go boom. These diversifications seemed to pay dividends for
Sasol. Their chemicals division contributed about a third of total profits in 1995.
In 2001, the company took another major step forward with the 1.3 billion euro acquisition
of CONDEA, a German chemical firm with operations in Europe, Mainland China,
and the US. The latter included a facility in the area of Lake Charles, Louisiana.
## Gas to Liquid
Another of Sasol's corporate strategies was to leverage
their perceived technical R&D strengths for the growing natural gas industry.
The center of that strategy was a technology called Gas-to-Liquid or
GTL. Natural gas is a common byproduct of oil production.
But natural gas's gaseous nature made it difficult to transport.
So they often flared it away for safety reasons - a bit wasteful.
GTL turns that natural gas into liquid fuels and chemicals via syngas. It is a riff on
Sasol's original coal-to-oil process except that you take in natural gas instead of coal.
The economic justification for doing GTL - and taking on the energy losses that come with it - is
to make that otherwise-unmovable natural gas more transportable.
Kind of like turning perishable milk into cheese. So in a way, it competes with LNG.
To encourage their technology,
Sasol struck a collaboration deal in 1999 with the American giant Chevron.
Two years later, Sasol struck a joint venture agreement with Qatar
to produce a GTL plant to rescue so-called "stranded" natural gas.
This eventually led to their first official overseas GTL plant in late 2003, the Oryx GTL
Project. The plant started operations in 2007 after a slight delay. Sasol,
a 49% partner, hailed it as proof that GTL works.
Lifting all of this were booming oil prices. After a long slump,
oil prices started rising in 1999 due to geopolitical crises in the
Middle East and high demand in emerging economies like India and Mainland China.
When oil prices are high, Sasol's coal-to-oil processes mint money.
Revenues soared from $11.5 billion USD in 2006 to $21 billion in 2011.
Profits were good too, with operating margins at
an excellent 20-26%. Why? Because oil prices were so high, coal was so cheap,
and Sasol's Apartheid-era plants in Secunda were fully depreciated.
## The Big Swing
In 2011, Sasol appointed a new CEO, David Constable.
Constable was Sasol's first outside CEO,
coming from the engineering company Fluor. Upon joining, he looked at macroeconomic
conditions and saw what he felt were the planets aligning on a massive opportunity.
In 2008, technological advances in horizontal drilling and fracking were unlocking previously
unreachable sources of natural gas, particularly in the United States.
The Shale Revolution as it was dubbed caused US natural gas prices
to fall from $12.30 per million British thermal units in mid-2008 to as low as
$2.69 in 2009. They did recover a bit but remained in the $4 range in 2011.
Yet during this same time, oil prices hovered at an eye-watering $100 per barrel.
Sasol saw the resulting price gap between oil and natural gas as an arbitrage opportunity.
Since their technology can start with any carbon fuel, including natural gas.
From there, an idea started to come together for a massive investment in
the United States. One that can take in cheap US natural gas and turn it
into valuable petrochemicals that can be sold into the lucrative US market.
This US growth program had compelling motivations. In 2011, about half of Sasol's
profits came from selling plastics and refined petrochemicals. This was an opportunity to raise
that proportion even more - moving away from oil to create a truly diversified chemicals giant.
There was also a geographical diversification opportunity.
Almost all of Sasol's revenues and profits then were being generated by assets based
in South Africa. Producing in the United States can help on cost and operations.
Moreover, Sasol already owned a facility and raw land in the Lake Charles area in the state
Louisiana from the CONDEA transaction. Expanding an existing site seemed better than starting from
scratch. Lake Charles was also near many of America's largest oil fields, so lots of gas.
The Louisiana state government also offered as much as a billion dollars in economic incentives.
Considering all this, Sasol and its management felt the time was right to try something big.
## Lake Charles
In late 2011, Sasol announced its goal to build the Lake Charles Chemical Project,
a fully integrated chemical complex.
Constable did the media conference announcement alongside then-Louisiana governor Bobby Jindal.
As originally announced, the Lake Charles Chemical Project would comprise of two
facilities, integrated together and dual-tracked.
The first half of the complex was a massive Gas-to-Liquids plant,
the first of its kind in the United States. The GTL plant will take in cheap natural gas
and churn out premium diesel fuel, naphtha, paraffin and other waxes.
Initially estimated to cost about $8-10 billion, the GTL plant would be delivered
over two phases in 2018 and 2019. It would also create 850 direct jobs and 4,500 indirect jobs.
The second half would be an ethane cracker. Yes,
that is what they actually call it. Natural gas has several components,
one of which is ethane. Ethane by itself is not very useful except for burning stuff.
But crackers can break down or "crack" that ethane into molecules like ethylene using
thermal or catalytic processes. Ethylene can then produce commercially valuable goods like plastics.
The late 2011 estimate said that the Lake Charles ethane cracker would cost about $4.5 billion
and start up in 2014. A generational swing for the fences. If done right,
Constable said that it will drive Sasol's growth for years to come.
Ernst Oberholster, the company’s managing director for new business development,
told the Financial Times in 2011:
> The US has significant reserves of clean-burning gas,
and because this supply has limited demand, the price is depressed.
> And most commentators believe it will stay at reasonable levels ... We
are confident that with our view of future prices, the project will work.
## Bad Signs
The announcement happened late 2011, but Sasol did not begin significant front end
design work on the integrated project until a year later in December 2012.
This was due to a long 18-month feasibility study. Lake Charles
had two integrated projects. The ethane cracker technology was pretty standard,
but the GTL plant ran a Sasol-only process. It was big and complicated.
And then there were labor shortages. Giants like Chevron, Exxon Mobil, Dow, and ConocoPhillips were
all trying to get projects built in Louisiana - and there was simply not enough workers.
The full Lake Charles Project was estimated to need 7,000 workers. A hard ask when the
labor shortage situation was so bad that Conoco's CEO said in March 2013 that,
"If you can spell ‘shale,’ you can get a job."
As a result, the cost estimates started rising.
The GTL plant cost estimates rose about $3 billion to $11-14 billion. Estimates
for the cracker project rose $1-2 billion to $5-7 billion in total.
Internally, serious concerns were raised about Sasol's ability to deliver such a megaproject.
In 2013, a South African law firm called Werksmans Attorneys gave Constable an internal
report detailing serious problems at an ongoing wax facility project in Sasolburg, South Africa.
That wax factory was called FTWEP. Originally costed at a billion dollars,
the build ran 40% over budget and resulted in a $100 million writedown.
Werksmans' probe found that employees had deliberately hid bad news about progress.
And that was South Africa. If Sasol can't deliver a $1 billion wax factory in their
own backyard without major problems, how can they be expected to deliver a
$20+ billion integrated chemical facility in another country 17 flight-hours away?
At this point, the company still had a chance to say no. Starting in March 2014,
Sasol's stock went on a tear, breaking 600 rand per share in August. Measured in USD,
their market cap was $37 billion. Since 2000, the stock returned 1,000%.
So the management had the credibility to turn their backs on the project.
But in late October 2014, they made the final investment decision to go
forward with the ethane cracker. By then, things were already starting to go bad.
## Things Start to Go Bad
Starting in mid-2014, oil prices pancaked from
$100 per barrel to the mid-40s by the end of the year.
Why? Short story. US shale oil started to hit the market. But
OPEC refused to cut production and yield market share. At the same time,
economic issues in Europe and Mainland China hurt oil demand, creating an oil glut.
The price gap between natural gas and oil vanished - ruining the economics
for new GTL plants. In a prescient move, Shell canceled a $20 billion GTL project in late 2013.
In January 2015, Sasol announced that it would
shelve the GTL portion of the Lake Charles chemical project.
An oil executive told the Wall Street Journal that Sasol executives overly
focused on natural gas prices going up. They never expected that oil prices would go down.
The GTL plant was finally killed in 2017,
along with plans for another facility to be built in Canada.
But the ethane cracker - and six downstream chemical units - moved forward,
despite ethylene prices also falling. The prevailing belief,
as explained in an investor presentation, was that polyethylene demand would stay strong.
Sasol also argued that their cracker was meaningfully different from the
other crackers then being built in the area.
Oh, by the way. In August 2016, Sasol raised the cost estimate
for the ethane cracker yet again from $5-7 billion to $11 billion.
An investor report noted that this was due to a combination of higher labor costs,
higher contractor costs, too many rainy days, and extra design work required when the Lake
Charles site was found to have poorer ground foundations than anticipated.
Constable told the press that Sasol was confident it was going to get
delivered and that the $11 billion was a "worst-case scenario" type estimate.
$11 billion also happened to be more than half the company's $18 billion market cap at the time.
Moreover, Constable was already out the door at Sasol. In June 2015,
he announced that he would not extend his contract. It raised eyebrows considering
he hadn't yet delivered the megaprojects that he started.
Sasol's chairman said that the company wanted a leader with a "long term view".
One fund manager said in mid-2015:
> This is not usual – the announcement comes as a bit of surprise ... it is
concerning that David Constable’s departure coincides with the implementation of Sasol’s
largest investment ever – this is not ideal and cause for concern
Constable's replacements were two Co-CEOs: Bongani Nqwababa,
Sasol's CFO, and Stephen Russell Cornell, their EVP of international operations.
## This is Fine
As late as 2018, Sasol still held out the story that the plan for Lake Charles was being executed.
In an 2018 interview with Bloomberg, the two co-CEOs said that the facility would bring in over
a billion dollars a year in revenue and transform the company into an international chemicals giant.
Co-CEO Tony Cornell said that they were already looking forward to doing "bolt-on"
acquisitions. When Sasol reported their annual results in August 2018, he added:
> The project cost is still within the market guidelines of $11 billion,
and good progress is being made.
So it came as a major surprise in early February 2019 when Sasol announced that
they were pushing back the cracker's start date by five months and raising
the final cost by another $500 million to about $11.8 billion.
Sasol management explained that as late as mid-November 2018 they originally thought
the plant construction to be on track and that it would be producing salable product before 2019.
Small problems had been reported with the carbon steel flanges - the
rings connecting pipes together or joining pipes
to pumps - but management thought those were contained. One month delay at most.
It soon became however clear that the steel flange problems inside the core ethane Cracker
as well as the ethylene oxide/ethylene glycol units were far more extensive than anticipated.
An external consultant had to be brought in. And it was then realized the changes would need
$210 million and 2-3 more months to fix. The
engineering contractor firms had to issue 8,000 drawing revisions.
The time delay was serious because it meant Sasol's cracker comes online the
same year as three others from South Korea, Taiwan, and Japan. With 4.2 million tons of
ethylene capacity all scheduled to hit in 2019, oversupply nightmares abounded.
## Fool Me Once ...
By now, Sasol's management had lost faith in their own team.
After the February debacle, Sasol's big shareholders asked management if
they were sure that this was it. Turns out it wasn't. In May 2019,
they announced that the cost estimate would rise another billion dollars to $12.6 to $12.9 billion.
Some of the work done to fix the steel flanges had damaged critical
path activities inside the Ethane cracker. The heat exchangers also suffered some corrosion.
They had to fix all that, adding another $210 million.
Another $180 million came from certain work contracts that Sasol discovered that it
owed. Yeah that one happens to me too.
And most vexingly, $230 million of additional cost because Sasol
duplicated how much money they were going to get from the Louisiana state
government for finishing the project. Real first-year analyst type error.
Investors were rightly infuriated. Then just to rub salt into the wound,
in early 2019 South Korean chemicals giant Lotte finished their own ethane
cracker - literally sitting right next to Sasol's albeit smaller - for just $3 billion!
In October 2019, co-CEOs Nqwababa and Cornell and other members of the management team were
fired. The company framed this move as taking responsibility for the failure.
Fleetwood Grobler, EVP of the chemicals division,
took over as CEO. To retain cash for the project, Sasol also canceled the dividend.
## COVID
And then in 2020, the COVID pandemic hit. Lockdowns across
the world caused oil prices to crash so hard they went negative for a time.
In August 2020, the company reported that revenues fell from $14.4 billion
to $10.9 billion. The company also reported a substantial $5 billion loss due to low prices
plus writedowns in the base chemicals business and some South African assets.
Sasol took on a lot of debt to finish the project. The
$10 billion of debt threatened to take them down entirely.
A few months later in October, they sold a 50% stake in the Lake Charles complex - which
cost them $12.6 billion to build - to the American chemical company LyondellBasell for
$2 billion. LyondellBasell also agreed to operate the plant.
The last of the seven chemical plants in Lake
Charles finally started up in November 2020. Long overdue.
## Conclusion
At both home and abroad, Sasol faces major challenges.
Back in South Africa, Sasol faces down daunting carbon emissions and ESG
commitments. Their titanic plant at Secunda has been called the world's largest carbon
emitter by volume. But shutting down their core business is not financially viable.
Overseas, the chemicals business - once held up as the company's
future - has suffered from a growth slowdown in chemicals post-COVID,
debt from prior acquisitions, and increased competition from China.
It requires a brutal turnaround. A long and painful road to recovery lies ahead. New
head Antje Gerber recently proposed to shut down or mothball four Sasol plants overseas.
Today, Sasol's market capitalization stands at about $3.9 billion - having fallen 90% from its
2014 peak. It seems unlikely that the 70-year old synthetic oil icon is coming back any time soon.
Ask follow-up questions or revisit key timestamps.
Sasol, established in 1950, is South Africa's sole commercial-scale synthetic oil producer, converting coal into oil using the Fischer-Tropsch process. Its origins trace back to Germany's need for oil during wartime and South Africa's similar lack of oil reserves but abundant coal. The company became a strategic asset for the Apartheid government, providing energy independence amidst international sanctions, leading to the construction of large plants like Sasol I, II, and III. After Apartheid, Sasol diversified into petrochemicals and Gas-to-Liquid (GTL) technology. In 2011, driven by cheap US natural gas and high oil prices, Sasol embarked on a massive $13 billion Lake Charles Chemical Project in Louisiana, aiming to build a GTL plant and an ethane cracker. However, the project faced significant challenges: the GTL component was shelved due to falling oil prices, and the ethane cracker suffered massive cost overruns, labor shortages, design flaws, and management miscalculations. This culminated in management firings, the cancellation of dividends, and eventually, the sale of a 50% stake in the nearly completed complex to LyondellBasell for a fraction of its cost, exacerbated by the COVID-19 pandemic. Today, Sasol faces substantial debt, ESG commitments related to its large carbon footprint, and a significantly reduced market capitalization, pointing to a long recovery road ahead.
Videos recently processed by our community