Glass Manufacturing Workers

Glass Worker Asbestos Exposure
High-risk occupation in extreme-heat environments
Risk Level	High
Furnace Temps	2,700°F+
Peak Exposure Era	1920s-1980s
Primary Products	Furnace insulation, lehr linings, PPE
Key Employers	Corning, Owens-Illinois, Owens Corning
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Glass Manufacturing Workers and Mesothelioma: Asbestos Exposure Risks, Compensation & Legal Rights

Executive Summary

Glass manufacturing workers—including glassblowers, bottle makers, plate glass makers, window glass makers, and furnace operators—experienced significant asbestos exposure through furnace operations and heat-protective equipment in facilities operating at temperatures reaching 2,700°F. The glass manufacturing process requires sustained exposure to extreme heat, making asbestos insulation and protective equipment essential throughout the industry during the peak asbestos era. Furnace linings, heat shields, conveyor components, and personal protective equipment all contained asbestos materials that workers encountered throughout their shifts. Major glass manufacturers including Owens Corning faced massive asbestos litigation, with the company documenting over 460,000 asbestos claims before establishing its bankruptcy trust. According to Danziger & De Llano, glass manufacturing workers diagnosed with mesothelioma may pursue compensation through multiple sources including the Owens Corning trust and litigation against other manufacturers.

The glass industry's high-temperature processes created continuous asbestos exposure for workers throughout manufacturing facilities. Furnace operators worked in direct proximity to asbestos-insulated melting tanks operating at extreme temperatures. Glass formers and handlers wore asbestos protective gloves and aprons while working with molten glass. Maintenance workers encountered asbestos when servicing furnaces, replacing insulation, and repairing equipment throughout facilities. Like Foundry Workers and Steel Mill Workers, glass manufacturing workers operated in industrial environments where extreme heat made asbestos insulation ubiquitous. Boilermakers, Plumbers and Pipefitters, and Insulation Workers who maintained glass plant equipment created additional bystander exposure. The Owens Corning Fibreboard Trust, established following bankruptcy, now provides compensation for workers exposed to the company's products, with over $30 billion available across 60+ active asbestos trust funds for qualified claimants.

Key Facts

Key Facts: Glass Manufacturing Worker Asbestos Exposure

Risk Classification: High – extreme temperatures required extensive asbestos insulation Furnace Temperatures: 2,700°F+ for glass melting, up to 3,000°F for specialty formulations CDC Documentation: Insulation samples at glass plants contained 3-5% amosite, up to 31% chrysotile Peak Exposure Period: 1920s-1980s, before ceramic fiber alternatives became common Primary Exposure Sources: Furnace insulation, annealing lehr linings, asbestos gloves and aprons OSHA Identification: Glass workers listed as at-risk population in 1976 study Owens Corning Claims: 460,000+ asbestos claims leading to 2000 bankruptcy Lehr Operations: Conveyor furnaces cooling glass from 1,000°F used asbestos extensively Furnace Rebuild Cycles: Major exposure events every 5-15 years during furnace campaigns Trust Fund Availability: Owens Corning Trust, Johns-Manville Trust, and others

What Asbestos Exposure Did Glass Manufacturing Workers Face?

Glass manufacturing workers encountered asbestos through multiple pathways inherent to high-temperature glass production.

Glass Furnace Insulation (Primary Risk):

Glass melting furnaces represent the highest-temperature industrial equipment, with tank temperatures routinely exceeding 2,700°F:

• Furnace Crown and Sidewall Insulation: Thick layers of asbestos-containing refractory materials insulated the furnace superstructure
• Regenerator Chambers: Recuperative heat exchange systems used asbestos insulation to maintain thermal efficiency
• Burner Ports and Flame Zones: High-temperature asbestos materials surrounded combustion areas

Workers maintaining these systems—particularly during furnace rebuild campaigns occurring every 5-15 years—faced extreme exposures when removing deteriorated insulation and installing new materials.

Annealing Lehr Insulation:

Lehrs are specialized conveyor furnaces that slowly cool newly formed glass from approximately 1,000°F to room temperature over hours or days. CDC documented asbestos hazards in annealing furnace areas at glass facilities, finding amosite and chrysotile asbestos in loose insulation around lehrs.

"Glass manufacturing required temperatures that no other industrial process approached. Every square foot of furnace surface was insulated with asbestos, and workers wore asbestos head-to-toe. The combination of environmental and personal protective equipment exposure created substantial cumulative risks."

— Rod De Llano, Founding Partner, Danziger & De Llano

Which Asbestos Products Did Glass Manufacturing Workers Encounter?

Glass workers encountered asbestos throughout the production environment:

Product Type	Asbestos Content	Manufacturers
Glass Furnace Insulation	40-100% chrysotile/amosite	Johns-Manville, refractory manufacturers
Annealing Lehr Insulation	3-31% various types (CDC documented)	Specialty insulation manufacturers
Asbestos Gloves/Mitts	50-100% woven chrysotile	Industrial safety suppliers
Asbestos Aprons	40-90% woven asbestos	Multiple manufacturers
Pipe Insulation	20-85% chrysotile/amosite	Johns-Manville, Owens Corning
Building Materials	5-40% various types	Johns-Manville, U.S. Gypsum

Where Were Glass Manufacturing Workers Most Exposed?

Furnace Operations: Workers involved in furnace rebuilds (every 5-15 years) faced the highest exposure levels during extensive removal of deteriorated asbestos refractory materials.

Lehr Maintenance: Scraping, wire brushing, and reapplication of asbestos insulation on conveyor furnaces created repeated exposure events. Corning Glass Works used asbestos-lined lehrs extensively across facilities.

West Virginia Glass Plants: Workers at Clarksburg, Moundsville, Weston, and Fairmont facilities filed claims based on exposure to furnace insulation, pipe coverings, boiler jackets, and asbestos protective equipment.

Major Manufacturers: Corning Glass Works, Owens-Illinois, and Owens Corning operated facilities where workers encountered extensive asbestos use from the 1920s through the 1980s.

⚠ NIOSH Finding: The National Institute for Occupational Safety and Health published a 1976 study identifying specific high-risk processes in glass production: emptying the baghouse, nailing, pressing, lathe operations, teardown, and grooving exposed workers beyond acceptable fiber limits.

What Compensation Can Glass Manufacturing Workers Receive?

Glass manufacturing workers diagnosed with mesothelioma may be entitled to substantial compensation.

Owens Corning Asbestos Claims:

Owens Corning filed for bankruptcy in 2000 after facing approximately 460,000 asbestos claims. The Owens Corning Asbestos Trust was established to compensate victims, including glass manufacturing workers exposed at company facilities.

Industry-Specific Trust Funds:

Glass manufacturing workers may file claims with multiple trusts:

• Owens Corning/Owens Corning Fiberglas Trust – Established following 2006 bankruptcy reorganization
• Johns-Manville Trust – Payment percentage 5.1%; claims for insulation, protective equipment
• U.S. Gypsum Trust – Building materials used in glass manufacturing facilities
• Babcock & Wilcox Trust – Boiler and pressure vessel insulation

Key Defendant Manufacturers:

• Owens Corning/Owens-Illinois
• Corning Glass Works
• Johns-Manville
• Refractory and insulation manufacturers

"Glass manufacturing cases often have excellent documentation because major companies like Corning and Owens-Illinois maintained detailed maintenance records. Furnace rebuild schedules, insulation specifications, and equipment orders help establish exposure history decades later."

— Paul Danziger, Founding Partner, Danziger & De Llano

What Are Current Exposure Risks?

Legacy Exposure in Operating Facilities:

Many glass manufacturing plants continue operating in facilities constructed during the peak asbestos era. Aging furnace insulation, deteriorated lehr linings, and asbestos-containing building materials pose ongoing risks during routine maintenance, equipment upgrades, and facility renovations.

Demolition of Closed Plants:

The U.S. glass manufacturing industry has consolidated significantly. Demolition activities at closed plants disturb asbestos in massive furnace structures, extensive piping, and structural building materials.

✓ Documentation Tip: Glass manufacturing workers should gather employment records from major employers like Corning, Owens-Illinois, or Owens Corning. Furnace rebuild schedules and maintenance records are particularly valuable for establishing exposure during peak-risk activities.

Get Help Today

If you or a loved one worked in glass manufacturing and has been diagnosed with mesothelioma, you may be entitled to significant compensation. The attorneys at Danziger & De Llano have decades of experience representing industrial workers exposed to asbestos.

Don't Wait — Time Limits Apply 460,000+ Claims Filed Against Owens Corning Alone Over $30 BILLION available through asbestos trust funds.

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