About Horse Research Bldg Gray Summit

The Purina Mills Research Center, specifically the Horse Research Building in Gray Summit, Missouri, was an industrial and research facility built before the 1980s that reportedly utilized asbestos-containing materials (ACMs). These materials offered heat resistance, fireproofing, and durability, and were commonly integrated into building components across the Mississippi River industrial corridor. MDNR NESHAP (National Emission Standards for Hazardous Air Pollutants) abatement notifications document ACM presence and removal at the facility. The documented asbestos-containing materials present at the site included asbestos-containing sheet flooring and asbestos-containing pipe insulation. Specific abatement projects occurred at the Horse Research Building in 1999 (involving sheet flooring) and at the broader Purina Mills campus in 1996 (involving pipe insulation at Operation Building P#0203).

General Equipment at Horse Research Bldg Gray Summit

The equipment below represents the systems and infrastructure documented or typically present at this facility during the era when asbestos-containing materials were specified in industrial construction. This is general facility-equipment reference — not a legal attribution of any specific product, manufacturer, or exposure event to this facility. Material-category and manufacturer information is addressed in the AsbestosIndex Product Crosswalk linked under the records table below.

Industrial Boilers View crosswalk › Process Piping View crosswalk › Pipe Insulation View crosswalk › Block Insulation View crosswalk › Valves View crosswalk › Gaskets View crosswalk › Pumps View crosswalk › Heat Exchangers View crosswalk › Cooling Equipment View crosswalk ›

Documented Asbestos Evidence

The records below are verified, state-documented asbestos removals at this facility. Each entry represents a regulated abatement project where the Missouri Department of Natural Resources (Missouri DNR) was notified under federal NESHAP rules, the work was logged, and the asbestos-containing material was confirmed and removed under regulated conditions. These are not allegations or estimates — they are paper records tying documented asbestos-containing material to this specific site.

MDNR NESHAP records detail specific asbestos abatement projects at the Purina Mills Research Center. These projects confirm asbestos-containing materials reportedly existed:

Material Categories in Documented Records

The materials documented above (and similar asbestos-containing materials commonly encountered in records of this type) appear in the AsbestosIndex catalog with historical manufacturer and trust-fund information. Click a category to view manufacturers historically associated with that material:

Thermal System Insulation View crosswalk › Asbestos-Cement Board View crosswalk › Pipe Insulation View crosswalk › Roofing & Flashing View crosswalk › Spray Fireproofing View crosswalk › Floor Tile & Mastic View crosswalk › Ceiling Tile View crosswalk › Gaskets & Packing View crosswalk ›

Who May Have Been Exposed at Horse Research Bldg Gray Summit

Documented asbestos-containing materials put various trades and personnel at risk of asbestos exposure at the Purina Mills Research Center — Horse Research Building. Insulators reportedly handled and installed/removed asbestos-containing insulation, potentially including pipe covering or calcium silicate insulation, with members of Heat and Frost Insulators Local 1 (St. Louis, MO) or Local 27 (Kansas City, MO) possibly involved. Pipefitters allegedly worked with or around asbestos-insulated pipes, possibly containing gaskets and packing or valves with asbestos components, with Plumbers and Pipefitters UA Local 562 (St. Louis, MO) members potentially involved. Boilermakers may have worked on boilers or steam systems potentially insulated with asbestos-containing materials, with Boilermakers Local 27 (St. Louis, MO) members possibly assigned. Electricians accessed areas containing insulated conduits, wiring, and other asbestos-containing building components such as electrical panels. Maintenance staff performed routine repairs that could have disturbed ACMs, including replacing asbestos-containing packing in pumps or valves. Construction and renovation workers built the facility or performed later renovations, handling various asbestos-containing building materials including documented sheet flooring or ceiling tile. Custodial staff may have been exposed to fibers released from disturbed or damaged ACMs during cleaning activities.

Critical Filing Deadline & Next Steps

Missouri law gives mesothelioma and asbestos-disease claimants 5 years from the date of medical diagnosis to file a personal-injury lawsuit (Mo. Rev. Stat. § 516.120). For wrongful-death claims after an asbestos-related death, the filing window is 3 years from the date of death (Mo. Rev. Stat. § 537.100). The two deadlines run on separate tracks — preserving one does not extend the other.

The personal-injury clock runs from diagnosis, not from exposure. Mesothelioma latency is typically 20 to 50 years, so workers exposed in the 1950s–1980s are being diagnosed today.

Practical first steps

  1. Document what you remember. Pay stubs, W-2s, union cards, photographs, coworker names, and dates of employment. The WorkChain widget on this page can save a copy you can email yourself.
  2. Preserve medical records. Pathology reports, biopsy results, imaging, and pulmonary-function tests are central to both civil claims and trust-fund filings.
  3. Identify household members. Spouses who laundered work clothing and children of plant workers are eligible for secondary-exposure claims when diagnosed with an asbestos-related disease.
  4. Speak with an asbestos attorney with Missouri experience. The first conversation is free and confidential. Asbestos trust-fund claims and civil claims run on different tracks — both can be pursued in parallel.

Asbestos-Related Diseases

Asbestos fiber exposure can cause several specific diseases that typically appear decades after the original exposure. The latency period — the gap between exposure and diagnosis — usually runs 20 to 50 years. That's why workers exposed in the 1960s, 1970s, and 1980s are receiving diagnoses today.

Mesothelioma

A rare, aggressive cancer that affects the lining of the lungs (pleural mesothelioma), abdomen (peritoneal), or heart (pericardial). Mesothelioma is almost exclusively caused by asbestos exposure, which is why a mesothelioma diagnosis often points directly to historical workplace exposure. Average latency from first exposure to diagnosis is 30-50 years.

Asbestosis

A chronic, non-cancerous scarring of lung tissue caused by inhaled asbestos fibers. Asbestosis causes progressive shortness of breath, persistent cough, and reduced lung function. It does not improve with treatment, and it is a recognized basis for compensation under most trust schedules and civil claims.

Lung Cancer

Asbestos exposure significantly increases the risk of lung cancer, particularly when combined with a history of smoking. Asbestos-related lung cancer is compensable under the same trust schedules and civil claim avenues as mesothelioma.

Other Recognized Diseases

Pleural plaques, pleural thickening, laryngeal cancer, ovarian cancer, and certain gastrointestinal cancers are also recognized as asbestos-related under various trust schedules and case-law authorities, though eligibility and proof requirements vary by claim type.

If you have any of these diagnoses and you worked at this facility, lived with someone who did, or were exposed in any documented capacity, you may have a claim worth pursuing. Speak with an attorney before assuming you don't qualify.

Cross-State & Regional Corridor Workers

These types of exposures occurred at many industrial sites in the Missouri and Illinois region, including the Clark Refinery in Wood River, IL, Monsanto Chemical in Sauget, IL, and other facilities along the Mississippi River. These materials commonly appeared in industrial and research settings across Missouri and Illinois, including the Labadie Energy Center, Monsanto facilities, and Laclede Steel. This type of exposure has concerned families of workers at facilities throughout Missouri and Illinois, such as the Shell Oil / Roxana Refinery and Sioux Energy Center.

Data Sources

Information about facility equipment, industrial materials, and occupational records referenced on this page is drawn from publicly available sources where applicable, including:

If specific equipment or product claims in this article are sourced from a non-public database, the source is identified parenthetically within the text above.