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Acid Plant Database August 30, 2026
| Owner | Mosaic
Company Mosaic Phosphate Company |
|
| Location | 9959 Highway
18 St. James St. James Parish Louisiana USA 70086 |
|
| Background |
In the early 1900s Thomas C. Meadows, an entrepreneur in Tennessee's
phosphate mining business, formed the United States Agricultural
Corporation. The company was established to provide basic fertilizer
nutrients to U.S. growers. 1909 - Meadows and his brother-in-law, Oscar L. Dortch, teamed with Waldemar A. Schmidtmann whose holdings included Kaliwerke Sollstedt - a thriving potash mine in Germany. The three acquired the Schmidtmann holdings in the potash mine and formed the International Agricultural Corporation in New York. 1942 - Company moved its headquarters to the Chicago area and changed its name to International Minerals & Chemical Corporation 1988 - Initial public offering of the fertilizer assets of International Minerals & Chemical Corporation created a new public company called IMC Fertilizer Group 1993 - IMC Global entered into a joint venture that launched IMC Phosphates Company M.P. (originally known as IMC-Agrico Company), a phosphate mining and fertilizer production company in Florida and Louisiana 1994 - Company name changed to IMC Global Inc. to better reflect the worldwide scope of the corporations operations 1997 - IMC Global merged with Freeport-McMoRan Formerly Agrico Chemical Company Formerly IMC-Agrico (2004) |
|
| Website | www.mosaicco.com | |
| Plant | Faustina Plant | |
| Plant No. 1 | Plant No. 2 | |
| Coordinates | 30º 5' 15" N, 90º 55' 16" W |
30º 5' 14" N, 90º 55' 15" W |
| Type of Plant | Sulphur Burning | Sulphur Burning |
| Gas Source | Elemental Sulphur | Elemental Sulphur |
| Plant Capacity | 1800 MTPD | 1800 MTPD |
| SA/DA | - | - |
| Status | Unknown | Unknown |
| Year Built | 1975 | 1975 |
| Technology | Ralph M. Parsons | Ralph M. Parsons |
| Contractor | - | - |
| Remarks | In response to then-current reduced market demand, IMC Phosphates suspended production at its Taft facility in July 1999 and suspended phosphoric acid production at its Faustina facility in November 1999. From January 2001 until August 2001, IMC Phosphates temporarily shut down its Uncle Sam phosphoric acid production as well as its Faustina DAP and GMAP production. The Taft facility and Faustina's phosphoric acid production facilities remain temporarily idled. |
|
| Pictures | ![]() |
|
| General | The Faustina plant produces phosphate fertilizers as the primary product and ammonia as an intermediate product. The complex also stores and transfers through its rail, truck, ship and barge facilities, phosphate fertilizers, sulfuric acid, phosphoric acid, ammonia, molten sulfur and prilled sulfur. The Faustina Plant currently operates under two separate permits: State Permit No. 2560-00021-02, issued October 16, 1996 and as amended on March 17, 2000 and August 22, 2003. | |
| References | - | |
| News |
August 28, 2026
- The Mosaic Company will lay off
over 200 employees at two of its Louisiana facilities due to ongoing sulfur
supply constraints affecting phosphate fertilizer production. According to
a WARN notice filed on Aug. 26, the Mosaic Company will have 206 workers
laid off by Saturday, Oct. 10. Company spokespeople said in a prepared
statement that global sulfur supply constraints and “extraordinary market
conditions” led to the decision to reduce portions of its workforce at its
Uncle Sam and Faustina facilities, located in Donaldsonville and Convent.
According to the company’s website, with more than 500 employees and
contractors in Louisiana, the company is one of the largest employers in St.
James Parish. Ammonia production at Faustina continues uninterrupted
during the idling of phosphate operations. Company officials noted the
challenge was previously disclosed in its Q2 earnings release and discussed
during its earnings call. “As previously disclosed in our Q2 earnings
release and discussed during our earnings call, Mosaic is navigating an
ongoing challenge related to the availability and cost of sulfur, an
essential input for phosphate fertilizer production,” reads a statement from
the company. “The safety of our employees, contractors, communities, and the
environment remains Mosaic's highest priority. Mosaic will continue to
responsibly manage its facilities and assets, in accordance with regulatory
requirements.” The company also plans to pursue opportunities to
resume full operations as market conditions improve, according to officials.
In a letter, a spokesperson for Mosaic said the company intends to support
its employees in the transition. "We recognize how difficult this news
is for our employees and their families. Please know that we are committed
to supporting them through this transition, with the care and safety of our
people and communities as our top priority," the letter read. December 10, 2019 - Mosaic Co. is restarting its idled fertilizer production facilities in St. James Parish and officials hope they will be fully operational by Monday. Spokeswoman Callie Neslund said all employees furloughed during the two-month idling returned to work last week, but many of them are undergoing standard safety training following the extended break. The company halted production in St. James Parish on Oct. 1 and furloughed more than 370 employees due to an oversupply of the agriculture fertilizer that Mosaic makes along the Mississippi River, company officials said then. Though a handful of employees remained during the furlough for maintenance, the idling affected both Mosaic operations in St. James — the Uncle Sam and Faustina facilities straddling either side of the river. Neslund said the fall season was not as good as the company hoped, but the idling achieved a balance of customer demand with the company's excess inventory. "We hope to be fully operational by the 16th, but in the interim, all of the employees have returned to full-time employment," Neslund said. She said the company began the multiday process of restarting the complex on Thursday and had previously begun receiving shipments in preparation for the restart. During the plant idling, furloughed employees received at least 70% of their pay, plus all key benefits. The slowdown came as the company was responding to a slow shifting of its massive waste gypsum pile at the east bank of the Uncle Sam facility near Convent, though company officials said the plant idling was related to market conditions. The movement of the waste pile, which is about 185 feet tall and has its own nighttime warning lights for aircraft, had raised worries early this year from state and federal regulators concerned about the integrity of a large lake inside the pile. The lake holds hundreds of millions of gallons of acidic and radioactive process water. Regulators and the company now say the risk of a catastrophic failure and release of the water is minimal. The movement of parts of the pile's north wall and the earth deep beneath that wall have slowed significantly after a series of emergency measures. The movement went from more than a half-inch per day to one-tenth to one-hundredth of an inch per day, on average, state reports show. A halt in production affects the company's ability to manage the supply of the process water on site, company officials have previously said. Rainfall expands that supply while continued fertilizer production causes the water to evaporate. Company officials said at the time of the furlough that they had spare water storage capacity and other efforts underway to reduce process water levels so they could manage the water during the production halt.
October 1, 2015 -
EPA and the U.S. Department of Justice announced a settlement with Mosaic
Fertilizer, LLC that will ensure the proper treatment, storage, and disposal
of an estimated 60 billion pounds of hazardous waste at six Mosaic
facilities in Florida and two in Louisiana. The settlement resolves a series
of alleged violations by Mosaic, one of the world’s largest fertilizer
manufacturers, of the federal Resource Conservation and Recovery Act (RCRA),
which provides universal guidelines for how hazardous waste must be stored,
handled and disposed. The 60 billion pounds of hazardous waste addressed in
this case is the largest amount ever covered by a federal or state RCRA
settlement and will ensure that wastewater at Mosaic’s facilities is
properly managed and does not pose a threat to groundwater resources.
May 10, 2011 - The Mosaic Company
today announced it will temporarily shut down its
Louisiana
operations due to the impact of the Mississippi River flooding on its
electrical power supplies. Operations will resume when river water levels
recede and conditions permit. The Company also noted that its ammonia plant
at this location is temporarily idled for repairs following a recent
incident. Mosaic's
Louisiana operations include Faustina,
which produces diammonium phosphate and ammonia, and its Uncle Sam facility,
which produces phosphoric, sulfuric and fluosilicic acid.
These matters are not expected to have a material impact on Mosaic's
operations or financial results. October 5, 2009
- Plymouth-based fertilizer giant Mosaic reported sharply lower profits for
the first quarter amid a global sales slowdown of crop nutrients. In a
release issued after trading closed Monday, the company reported sales of
$1.46 billion, or 66 percent below last year's first quarter sales of $4.32
billion. Earnings of $100.6 million for the quarter ending Aug. 31 were 92
percent below last year's $1.18 billion and amounted to 23 cents per share.
Analysts had expected earnings of 35 cents per share on sales of $1.54
billion. Sharp increases in fertilizer costs beginning last year,
along with falling prices for some key agriculture commodities and the
global recession, have thrown fertilizer sales into a tailspin. Mosaic's
industry rival, PotashCorp. of Saskatchewan, Inc., has scaled back its
financial guidance several times this year. Mosaic, which
produces fertilizer ingredients potash and phosphate, earlier this year
declined to issue guidance "until market conditions normalize" on
significant aspects of its business, including potash sales volumes and
selling price. Cargill, the agribusiness titan and majority
owner of Mosaic, warned in August that earnings had dropped at Mosaic. That
same month, Mosaic officials said potash sales had fallen 35 to 40 percent,
and phosphate sales were off 15 to 20 percent. The company's long-term
outlook remains positive because global demand for food, and thus the
fertilizer needed to grow it, remains strong and rising. Projections of both
population and calorie consumption show that farmers around the world must
sharply increase their production to feed the planet. "Phosphate
fundamentals have improved," said James T. Prokopanko, company president and
CEO. "The potash market is evolving and we expect strong demand in calendar
year 2010 for both nutrients." |
|
MTPD - Metric Tonne per Day
STPD - Short Ton per Day
MTPA - Metric Tonne per Annum STPA - Short Ton per
Annum
SA - Single Absorption
DA - Double Absorption
* Coordinates can be used to
locate plant on Google Earth