Thornton Quarry safety activity
MSHA violations, accident reports and inspections.
Safety activity
Spot Inspection
9.5 on-site hours reported
General requirements.
30 CFR 56.4200(b)(2) · $151.00 proposed penalty
Horns and backup alarms.
30 CFR 56.14132(a) · $151.00 proposed penalty
Regular Safety and Health Inspection
64.3 on-site hours reported
Handling of materials
Days away from work only
Accident narrative
At the start of the shift employee was climbing access ladder of 992G FEL. Employee stated they felt right arm tingle and feel numb. They did not slip or try to catch themselves, was just climbing ladder normally. EE was taken to clinic, diagnosed w/ arm/shoulder strain, placed on restricted duty and referred to PT for eval and treatment
Safety defects; examination, correction and records.
30 CFR 56.14100(b) · $151.00 proposed penalty
Safe access.
30 CFR 56.11001 · $151.00 proposed penalty
Regular Safety and Health Inspection
25.0 on-site hours reported
Non-Chargeable Accident Investigation
2.8 on-site hours reported
Other
Injuries involvng nonemployees
Accident narrative
Contact person was called by the Illinois Tollway on the afternoon of 1/27/26 about a missing person that was suicidal that may have jumped in the West Quarry off of the 80/94 tollway. Second contact was contacted around 4:00PM to come help search the West Quarry. At around 4:50PM the body of the trespasser was found and reported to authority's and the department of labor.
Non-Chargeable Accident Investigation
13.0 on-site hours reported
Slip or fall of person
Injuries involvng nonemployees
Accident narrative
Approx. 10:39pm on 11/22 we were contacted by Thornton fire dept. with a request for access to recover the body of an individual who had jumped to their death from Interstate 80/94 Tri-state tollway. The body was located approx. 150' below the road surface and was not accessible from the quarry & Was NOT Part of Mine Property according to Property Maps.
Electrical conductors.
30 CFR 56.12004 · $288.00 proposed penalty
Danger signs.
30 CFR 56.12021 · $504.00 proposed penalty
Locking transformer enclosures.
30 CFR 56.12068 · $504.00 proposed penalty
Regular Safety and Health Inspection
71.0 on-site hours reported
Handling of materials
Days away from work only
Accident narrative
Employee was organizing parts in a storage area. EE had a shaker screen counterweight on the tines of a forklift. EE slid the counterweight off the tines of the forklift, when EE did EE felt a twinge in right shoulder. Self-treated until Monday, when EE was seen at a clinic, diagnosed with a muscle strain, placed on restricted duty (no use of R arm) until follow up appt.
Regular Safety and Health Inspection
24.3 on-site hours reported
Locking transformer enclosures.
30 CFR 56.12068 · $818.00 proposed penalty
Sources and definitions
MSHA Violations (issue date), Accidents (accident date) and Inspections (begin date).
Violation titles use current CFR headings to identify the cited rule; they are not the inspector’s account of what happened.
Counts describe published rows, including contractor records; accident records are not distinct incidents or numbers of people injured.
Zero means no matching records in the imported sources, not proof of no events. Historical coverage differs by source; absence before a source begins reporting is not a zero incident rate. Invalid or absent dates and records after the snapshot are excluded.
S&S means SIG_SUB=Y. Fatality records use DEGREE_INJURY_CD=01. Proposed penalties are not final assessed or paid amounts; missing dollar values are omitted.
Inspection hours are SUM_TOTAL_ON_SITE_HOURS attributed to the inspection start date, without supervisor/trainee hours. Missing hours are omitted; a started inspection may still be open.
Portfolio totals use current mine membership, including events before the current owner or operator's tenure.