Inspection 348638206 OPENED DEC 11, 2025Closed
17775 Avenue 23 1/2, Chowchilla, CA 93610 · Mineral Wool Manufacturing · OSHA's record · Phone and website on Google Maps
No citations from this inspection.
Since 1996, OSHA inspectors have visited Certainteed LLC in California 7 times.
The most recent inspection opened on Dec 11, 2025 after an accident, in Chowchilla.
In all, OSHA issued 3 citation items: 2 serious and 1 other-than-serious.
The proposed penalties came to $38,700; today they stand at $21,575, 44% less.
Among manufacturing employers, the typical cited inspection since 2015 ends with a $4,500 penalty. Certainteed LLC averages $7,192 across 3 cited inspections.
Certainteed LLC also files yearly injury logs with OSHA, summarized below.
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Watch this companyInspection history
Inspection 347437899 OPENED APR 24, 2024Closed
17775 Avenue 23 1/2, Chowchilla, CA 93610 · Mineral Wool Manufacturing · OSHA's record · Phone and website on Google Maps
No citations from this inspection.
Inspection 346622038 OPENED APR 10, 2023Closed
17775 Avenue 23 1/2, Chowchilla, CA 93610 · Mineral Wool Manufacturing · OSHA's record · Phone and website on Google Maps
No citations from this inspection.
Inspection 346386576 OPENED DEC 9, 2022Closed
17775 Avenue 23 1/2, Chowchilla, CA 93610 · Mineral Wool Manufacturing · OSHA's record · Phone and website on Google Maps
| Citation and rule | Type | Proposed | Current | Issued | Status |
|---|---|---|---|---|---|
| Citation 1, item 1 29 CFR 4070(A) |
Serious | $2,700 | $2,700 | Feb 16, 2023 | Final |
Inspection 344064415 OPENED JUN 6, 2019Closed
1431 W. E Street, Wilmington, CA 90744 · Residential Remodelers · OSHA's record · Phone and website on Google Maps
Incident on May 30, 2019: Employee's finger is amputated when caught in closing gate
At 3:45 p.m. on May 30, 2019, Employee #1 and a coworker, employed by a roofing shingles manufacturer, were cleaning out a Granular Applicator Box. During this process, Employee #1's right hand became caught in the box's closing Quick Dump Gate. The employee's right middle fingertip was crushed and amputated. The employee was transported to the hospital and admitted for treatment of the amputation.
| Citation and rule | Type | Proposed | Current | Issued | Status |
|---|---|---|---|---|---|
| Citation 1, item 1 29 CFR 3203(A)(4) |
Other-than-serious | $18,000 | $875 | Oct 25, 2019 | Final |
Inspection 340945716 OPENED SEP 24, 2015Closed
17775 Avenue 23 1/2, Chowchilla, CA 93610 · Mineral Wool Manufacturing · OSHA's record · Phone and website on Google Maps
| Citation and rule | Type | Proposed | Current | Issued | Status |
|---|---|---|---|---|---|
| Citation 2, item 1 29 CFR 4002(A) |
Serious | $18,000 | $18,000 | Dec 3, 2015 | Final |
Inspection 120214945 OPENED MAR 14, 1996Closed
17775 Avenue 23 1/2, Chowchilla, CA 93610 · OSHA's record · Phone and website on Google Maps
Incident on Jan 12, 1996: Employee's leg broken in fall from ladder
At 10:15 p.m. on January 12, 1996, Employee #1 was climbing a metal ladder in Wa rehouse #1 to adjust a Strap Pak machine that had misfed. The heads of the machi ne were on a platform about 5 ft from the floor. Employee #1 later stated that h is left foot either slipped or missed the fourth rung of the five-rung ladder th at provided access to the platform. He fell approximately 4 ft, fracturing his l eft leg. Employee #1 also stated that he had been trained in the company's safet y program.
No citations from this inspection.
Injury and illness logs
From the Form 300A summaries employers file with OSHA each year. Rate = recordable cases per 100 full-time workers.
In 2025, the Chowchilla site logged 14 recordable injuries or illnesses among about 208 workers: 6.8 per 100 full-time workers, against a median of 2.6 for its industry. Those cases cost 1 days away from work.
| Site and year | Workers | Cases | Days-away cases | Rate | Industry median |
|---|---|---|---|---|---|
| Chowchilla site Chowchilla · 2025 | 208 | 14 | 1 | 6.8 | 2.6 |
| CertainTeed Wilmington Wilmington · 2019 | 64 | 1 | 1 | 1.6 | 0.6 |
| Certainteed Corporation Wilmington · 2017 | 59 | 0 | 0 | 0.0 | 0.6 |
The rules behind these citations
Current text from the Code of Federal Regulations. Some citations were issued under older wording.
Other mineral wool manufacturing employers in California
- Rann Valdez Stone, Inc. Concord · 8 citations · $17,300
- Colisseum Marble Co. Santa Ana · 2 citations · $350
- Artisans Stone & Tile Works Santa Ana · 3 citations · $525
- Brewster Marble Co. Chatsworth · 6 citations · $1,835
- Astonish, Inc. Sun Valley · 7 citations · $3,700
- Primus Marble Pacoima · 24 citations · $119,180
Source: U.S. Department of Labor, OSHA enforcement data. A citation is OSHA's allegation; employers can contest it, and the status column shows where each item stands. Something wrong on this page? Tell us.