Diamond Shamrock Corporation — Plants in Texas

Plaintiffs alleged in publicly filed U.S. asbestos personal-injury and wrongful-death litigation that they were exposed to asbestos while working at Diamond Shamrock Corporation plants in Texas. This page documents the Texas portion of Diamond Shamrock Corporation’s multi-state operations. For the full corporate summary and plants in other states, see the Diamond Shamrock Corporation manufacturer page.

Premises Description

Diamond Shamrock Corporation (formed 1967 by merger of Diamond Alkali Company — founded 1910 — and Shamrock Oil and Gas Corporation; restructured 1987 into Maxus Energy and Diamond Shamrock R&M; chemical operations later transferred to Occidental Chemical) was through the mid-to-late 20th century one of the principal U.S. specialty chemical, chlor-alkali, and refining companies. Diamond Shamrock operated through the asbestos era U.S. plants including:

  • Painesville OH — Diamond Alkali legacy chemical plant (today a Superfund site)
  • Deer Park TX — Diamond Shamrock chlor-alkali and chemicals (today Occidental Chemical)
  • Battleground TX (La Porte) — Diamond Shamrock chlor-alkali operations
  • Mobile AL — chemical operations
  • Belle WV — chemical operations
  • Newark NJ — Diamond Alkali historic site (Lister Avenue, today Superfund)
  • Henderson NV — chlor-alkali (later Pioneer / Olin)

Diamond Shamrock chlor-alkali plants — like Hooker, Olin, PPG, Stauffer, Occidental, and most U.S. chlor-alkali producers of the asbestos era — operated using asbestos-diaphragm cell technology, with asbestos diaphragms requiring replacement and rebuild as routine plant maintenance.

Plaintiffs alleged in publicly filed U.S. asbestos personal-injury and wrongful-death litigation that Diamond Shamrock — as premises owner and as user of asbestos-diaphragm chlor-alkali technology — exposed its chemical workforce and contractor pipefitters, insulators, boilermakers, and trade workers to extensive asbestos.

Diamond Shamrock Corporation / Diamond Alkali Company has been named as a Premises Defendant in publicly filed U.S. asbestos personal-injury and wrongful-death litigation.

Workers Exposed

  • USW / OCAW chemical workers at Diamond Shamrock plants
  • Chlor-alkali plant maintenance workers servicing Diamond Shamrock asbestos diaphragm cells
  • Refinery pipefitters and millwrights working Diamond Shamrock capital projects
  • Insulators (HFIAW Local members) on Diamond Shamrock construction and turnaround crews
  • Boilermakers (IBB Local members) building Diamond Shamrock plant equipment
  • Construction-trade workforces on Diamond Shamrock EPC projects

If You Worked at a Diamond Shamrock / Diamond Alkali Plant

If you worked at a Diamond Shamrock Corporation or Diamond Alkali Company chemical, chlor-alkali, or refining plant during the asbestos era — as an employee or as a dispatched contractor trade worker — and have since been diagnosed with mesothelioma, asbestosis, lung cancer, or another asbestos-related illness, you may have legal rights.

Free, confidential case evaluation: Speak with O’Brien Law Firm — (314) 936-2956