Heat & Frost Insulators Local 75 — South Bend, Indiana

Jurisdiction

Northern Indiana — St. Joseph County (South Bend), Elkhart County, LaPorte County, and the surrounding manufacturing corridor

Local 75 organizes the Heat & Frost Insulators across the North Bend / Michiana region — historically a major center of American automotive and military-vehicle manufacturing (Studebaker, Bendix, AM General) and the recreational-vehicle industry centered in Elkhart County. Members were dispatched to the major manufacturing plants, the Notre Dame and St. Mary’s campus heating plants, the Indiana Michigan Power generating stations, and the regional hospital systems.

For Indiana’s filing deadlines, primary courts, and the per-state jobsite catalog, see the partner state archive:

Notable workplaces in Local 75 territory

Through the asbestos era (roughly 1920s through early 1980s), Local 75 members were dispatched to facilities throughout Northern Indiana — many of which are now documented in federal NESHAP filings, state regulatory databases, and public asbestos litigation records. Major workplaces in the Local 75 historical territory included:

Studebaker Corporation South Bend manufacturing complex (1852–1963) · Bendix Corporation South Bend (automotive components, military electronics) · AM General Mishawaka (military vehicle production — formerly Studebaker plants) · Honeywell South Bend (formerly Bendix Aerospace) · Allison Transmission · Notre Dame University campus power plant and steam-distribution · St. Mary’s College and Holy Cross facilities · Memorial Hospital South Bend · St. Joseph Regional Medical Center · Indiana Michigan Power Cook Nuclear Plant (border with Michigan) · the Elkhart County RV manufacturing complex (multiple plants).

These are categories of workplace, not an exhaustive list. Local 75 dispatch records held by the Local’s business office contain the specific job-by-job assignments for individual members.

Why this Local matters for asbestos claims

The Studebaker complex — operating in South Bend from 1852 through 1963 — and the Bendix Corporation works represent one of the most-extensively-insulated automotive and aerospace manufacturing centers in the Midwest. Studebaker’s transition through wagon, truck, automobile, and military vehicle production created continuous insulation work across decades. The Notre Dame heating plant and campus steam-distribution network is among Indiana’s most-documented institutional insulator workplaces.

Products Local 75 insulators handled

Insulators in any jurisdiction worked the same general categories of asbestos-containing products through the asbestos era. The specific manufacturers varied by region, contract, and decade:

  • Pipe covering — Magnesia, calcium silicate, fiberglass-asbestos blends (Owens-Corning Kaylo, Johns-Manville Magnesia, Pittsburgh Corning Unibestos)
  • Block insulation — Calcium silicate or 85% magnesia block (details on AsbestosIndex)
  • Insulating cement — Dry-mixed asbestos cement, hand-applied to joints and irregular fittings — historically the highest-fiber-release product insulators handled
  • Refractory products — High-temperature furnace and boiler linings (refractory brick)
  • Gaskets and packing — Flange gaskets, valve packing
  • Asbestos cloth and millboard — Outer wrapping, fire blankets, jacketing
  • Spray fireproofing — Monokote and competitor products applied to structural steel

See the Asbestos Products page for the full catalog of products documented in insulator-era exposure.

If you or a family member is a Local 75 insulator

You have one of the most-documented exposure histories of any trade in U.S. occupational-health research. The medical literature has tracked your trade specifically since the 1960s. Your union health funds have actuarial data going back decades. The manufacturers that supplied your jobsites have funded over $30 billion in asbestos bankruptcy trust funds — many of which are still paying claims.

Free, confidential case review with an attorney experienced in insulator asbestos cases:

(314) 588-0558 — O’Brien Law Firm

All consultations are free. No fee unless a financial recovery is made on your behalf.

This page documents the historical context of Local 75’s jurisdiction in asbestos exposure research. It is not produced by or endorsed by the International Association of Heat & Frost Insulators and Allied Workers or Local 75. Information is drawn from public asbestos litigation records, federal NESHAP filings, state regulatory databases, and public industry-publication histories. Rights Watch Media Group LLC is an independent media publisher; O’Brien Law Firm is the editorial sponsor of this site.