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Sigma Engineered Solutions: OSHA inspections and violations

Markesan, Wisconsin · Steel Investment Foundries · NAICS 331512

2inspections
12citation items
$24,891current penalties
Feb 22, 2024last inspection

Sigma Engineered Solutions has 2 OSHA inspections on record in Wisconsin, the first in 2024.

OSHA's last visit started on Feb 22, 2024 on a referral, in Markesan.

Across those inspections OSHA issued 12 citation items: 12 serious.

OSHA proposed $41,485 in penalties. After settlements and reviews the total is $24,891, down 40%.

Most often, OSHA cited 1910.1053, silica dust in general industry (8 items).

For context, across all manufacturing employers the median penalty per cited inspection since 2015 is $3,600. Sigma Engineered Solutions averages $12,446 over 2 cited inspections in that time.

Sigma Engineered Solutions also files yearly injury logs with OSHA, summarized below.

Sigma Engineered Solutions: OSHA citation items per year, 2024 to 2024
Citation items per year, by inspection date.

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Inspection history

Inspection 347295446 OPENED FEB 22, 2024Closed

Referral · Partial · Health · 217 employees at the site · Closed Oct 25, 2024

1149 North Margaret Street, Markesan, WI 53946 · Steel Investment Foundries · OSHA's record · Phone and website on Google Maps

Citation and ruleTypeProposedCurrentIssuedStatus
Citation 1, item 1a
29 CFR 1910.134(c) · Respiratory protection
 Serious$11,524$6,914Jul 12, 2024Final
Citation 1, item 1b
29 CFR 1910.134(e)(1) · Respiratory protection
 Serious$0$0Jul 12, 2024Final
Citation 1, item 1c
29 CFR 1910.1053(g)(2) · Silica dust in general industry
 Serious$0$0Jul 12, 2024Final
Citation 1, item 2a
29 CFR 1910.1053(c) · Silica dust in general industry
 Serious$11,524$6,914Jul 12, 2024Final
Citation 1, item 2b
29 CFR 1910.1053(d)(3)(iii) · Silica dust in general industry
 Serious$0$0Jul 12, 2024Final
Citation 1, item 2c
29 CFR 1910.1053(f)(1) · Silica dust in general industry
 Serious$0$0Jul 12, 2024Final
Citation 1, item 3a
29 CFR 1910.1053(e)(1) · Silica dust in general industry
 Serious$11,524$6,914Jul 12, 2024Final
Citation 1, item 3b
29 CFR 1910.1053(f)(2)(ii) · Silica dust in general industry
 Serious$0$0Jul 12, 2024Final
Citation 1, item 3c
29 CFR 1910.1053(h)(2)(i) · Silica dust in general industry
 Serious$0$0Jul 12, 2024Final
Citation 1, item 3d
29 CFR 1910.1053(j)(1) · Silica dust in general industry
 Serious$0$0Jul 12, 2024Final

Inspection 347283251 OPENED FEB 15, 2024Closed

Complaint · Partial · Safety · 115 employees at the site · Closed Aug 29, 2024

1149 North Margaret Street, Markesan, WI 53946 · Steel Investment Foundries · OSHA's record · Phone and website on Google Maps

Citation and ruleTypeProposedCurrentIssuedStatus
Citation 1, item 1a
29 CFR 1910.147(c)(4)(ii) · Lockout/tagout
 Serious$6,913$4,148Jul 12, 2024Final
Citation 1, item 1b
29 CFR 1910.212(a)(2) · Machine guarding
 Serious$0$0Jul 12, 2024Final

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 Markesan site logged 1 recordable injury or illness among about 89 workers: 1.3 per 100 full-time workers, against a median of 5.4 for its industry.

Site and yearWorkersCasesDays-away casesRateIndustry median
Sigma Engineered Solutions - IC
Markesan · 2025
89 101.35.4
Sigma Engineered Solutions
Markesan · 2024
107 202.45.4

The rules behind these citations

Current text from the Code of Federal Regulations. Some citations were issued under older wording.

29 CFR 1910.1053 · Silica dust in general industry

29 CFR 1910.1053(c)

(c) Permissible exposure limit (PEL). The employer shall ensure that no employee is exposed to an airborne concentration of respirable crystalline silica in excess of 50 µg/m 3, calculated as an 8-hour TWA.

29 CFR 1910.1053(d)(3)(iii)

(iii) Where the most recent exposure monitoring indicates that employee exposures are at or above the action level but at or below the PEL, the employer shall repeat such monitoring within six months of the most recent monitoring.

29 CFR 1910.1053(e)(1)

(e) Regulated areas—(1) Establishment. The employer shall establish a regulated area wherever an employee's exposure to airborne concentrations of respirable crystalline silica is, or can reasonably be expected to be, in excess of the PEL.

29 CFR 1910.134 · Respiratory protection

29 CFR 1910.147 · Lockout/tagout

29 CFR 1910.212 · Machine guarding

Other steel investment foundries employers in Wisconsin

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.