Olin Corporation



Olin makes ammunition and chemicals. Founded in 1892, it is now headquartered in Clayton, Missouri. It is the largest supplier of small caliber ammunition to the U.S. military and one of the world’s largest manufacturers of chlorine, used in disinfection and a key ingredient in plastics like polyvinyl chloride or PVC. Historically chlorine was produced using mercury membrane technology at chlor-alkali plants which resulted in highly toxic mercury waste that manufacturers dumped into local environment. For example, Olin bought the Mathieson Alkali Works, which was responsible for dumping 100 pounds of toxic methylmercury daily into the Holston River in Virginia in the first half of the 20th century. Olin has two major chemical manufacturing facilities in Louisiana’s ‘Cancer Alley’ – a major industrial zone where crude oil is turned into fuel, plastics and other petrochemicals. Olin’s chlor-alkali plant in Plaquemine, Lousiana, has had several major leaks of toxic chlorine notably in 2016 and 2022, which have forced local residents to seek medical assistance. Similar pollution charges have been made against the companies chlor-alkali plants in Alabama and Nevada.


Copper alloys, Ammunition, Chlorine, Sodium hydroxide, Epoxies, Vinyls, Hydrochloric acid


Top 5 Offense Groups (Groups Defined)Penalty TotalNumber of Records
environment-related offenses$4,408,57023
safety-related offenses$628,24665
employment-related offenses$17,9641

(September 30, 2022)

Number of Records
Total Penalties
$5,054,780 (September 30, 2022)
Information in this section is drawn from the Violation Tracker database produced by the Corporate Research Project of Good Jobs First in Washington DC. It is the most comprehensive source of data on business violations of laws and regulations in the United States. For specific examples of misconduct, please click on the links.


Article Archive
Videos & Podcasts
Oceana in the News: Olin Plant Under Fire For Mercury Poisoning
Police officer sick after responding to Olin chemical chlorine leak in McIntosh Alabama
Chlorine Spill At McIntosh Chemical Plant
Chlorine leak reported at Olin Chemical plant in McIntosh
Crawford County, Georgia under shelter-in-place order after chemical plant fire



Recent & Ongoing Campaigns
Close the Olin Chlor Alkali Chemical Plant in Henderson NV

Eric Lier | Change.org | March 1, 2021

We, the undersigned, demand the Olin Chlor Alkali chemical plant located in the heart of Henderson, Nevada, be closed and the site be cleared of any toxic chemicals that have contaminated the area.

Major Investigations
& Lawsuits
Olin Corp. Sued Over Retirement Plan Administrative Fees, Funds

Jacklyn Wille | Bloomberg Law | November 10, 2021

Olin Corp. was sued in federal court by a proposed class of workers who say the Missouri-based ammunition maker’s $930 million retirement plan charges excessive record keeping fees while offering expensive and poorly performing investment options.

Investigations launched after chlorine leak in McIntosh

Brendan Kirby | Fox 10 News | August 12, 2020

Government and internal investigations have been launched following a chemical leak Tuesday that sent two workers to the hospital and triggered a shelter-in-place order.

Union Defends Move To Stop Olin From Firing Employee

Michael Phillis | Law 360 | July 17, 2020

Union Defends Move To Stop Olin From Firing Employee. A union has told an Illinois federal court that Olin Corp. was just frustrated with an arbitrator's refusal to let the company fire an employee ...

Olin, OxyChem Must Face Cartel Pricing Suit

Competition Policy International | March 30, 2020

Olin, Occidental Chemical, and three other top manufacturers of industrial-grade lye can’t dodge claims that they conspired on 13 separate price increases since 2015, a federal judge in Buffalo, NY, ruled.

Environmental Impact

U.S. Environmental Protection Agency | April, 2006

The Olin Chemical Superfund Site (Site) is comprised of the 53-acre property at 51 Eames Street in Wilmington, Massachusetts (Olin Property or Property) and adjoining off-Property areas that have been impacted by contaminant releases from manufacturing and waste disposal activities formerly conducted at the Property.

PERI Pollution Indexes

Based on United States Environmental Protection Agency data ranking the top 100 worst polluters.

Employment Practices
& Relations
African American woman sues Olin over alleged discrimination

Marian Johns | Madison Record | November 1, 2021

An African American female alleges Olin Corporation discriminated against her by paying her less and promoting co-workers with less experience and qualifications.


Corporate Headquarters
190 Carondelet Plaza Suite 1530, Clayton, MO 63105
Most Recent Gross Revenue
$9.848 billion (2022) | source
Most Recent Net Revenue
$1.512 billion (2022) | source
Stock Exchange Tickers

Note: Most recent list is not always the most complete list.

Croctail Subsidiary Tool using the CorpWatch API - This API extracts the subsidiary relationship information from Exhibit 21 of companies' 10-K filings with the US SEC.

    Major Shareholders

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    Political Influence

    Open Secrets - Tracks corporate lobbying of US politicians.


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    OpenSecrets.org Profile of Olin Corporation

    Import & Export Data

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    Subsidy Tracker
    Subsidy Tracker
    Subsidy Tracker is a project of Good Jobs First in Washington DC. It is the most comprehensive source of data on state and federal subsidies in the United States. For more details, click on the links.
    Click here for details on subsidies received by Olin Corporation
    Tax Havens
    & Evasion
    Information on Federal Contractors With Offshore Subsidiaries

    U.S. General Accounting Office | February 2004

    Over Half of the 100 Largest Publicly Traded Federal Contractors Report Having a Subsidiary in a Tax Haven Country, Including Some that Report Having a Foreign Sales Corporation in a Tax Haven Country:

    Major Projects
    Olin reducing production at Louisiana plant

    St. Louis Post Dispatch | May 18, 2021

    Olin Corp. said on Tuesday it is shutting down some chlor-alkali production at its Plaquemine, Louisiana plant by June 1.

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