MINE DETAILS
ROLLING ROCK PIT
MSHA MINE ID3608445
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- ROLLING ROCK PIT40.41389, -75.67278Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-13. MSHA quarterly production and employment reports.
Coal production
0reported short tons
Hours worked
94,705reported employee hours
Tons per hour
0.00production ÷ hours worked
Missing values appear as —. Totals use available reports. Tons per hour requires production and hours for the same quarters and a nonzero hours total. * Striped bars mark partial mine coverage or an incomplete quarter. See the table for coverage.
Quarterly data and reporting coverage
| Quarter | Coal (short tons) | Hours worked | Tons / hour | Avg. employees | Coverage |
|---|---|---|---|---|---|
| 2025 Q1 | 0 | 14,474 | 0.00 | 36 | 1/1 mines reporting |
| 2025 Q2 | 0 | 15,592 | 0.00 | 35 | 1/1 mines reporting |
| 2025 Q3 | 0 | 15,747 | 0.00 | 35 | 1/1 mines reporting |
| 2025 Q4 | 0 | 17,437 | 0.00 | 36 | 1/1 mines reporting |
| 2026 Q1 | 0 | 14,491 | 0.00 | 36 | 1/1 mines reporting |
| 2026 Q2 | 0 | 16,964 | 0.00 | 37 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
10 significant & substantial (S&S)
Accident records
30 records classified as fatality
Proposed penalties · USD
151.001 of 1 violations with amounts
On-site inspection hours
65.008 inspections · 8 with hours
Counts are published records, including contractor records. * The quarter was incomplete at the snapshot date; recent counts may rise as reports arrive. — means no reported amount or hours. Portfolio totals use current membership.
Quarterly safety data
| Quarter | Violations | S&S | Proposed USD | Accident records | Fatality records | Inspections | On-site hours |
|---|---|---|---|---|---|---|---|
| 2025-Q1 | 1 | 0 | 151.00 | 0 | 0 | 2 | 26.0 |
| 2025-Q2 | 0 | 0 | — | 0 | 0 | 1 | 9.0 |
| 2025-Q3 | 0 | 0 | — | 1 | 0 | 2 | 7.8 |
| 2025-Q4 | 0 | 0 | — | 0 | 0 | 2 | 10.5 |
| 2026-Q1 | 0 | 0 | — | 1 | 0 | 0 | — |
| 2026-Q2 | 0 | 0 | — | 1 | 0 | 1 | 11.8 |
| 2026-Q3 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
| Section | Violations | S&S |
|---|---|---|
| 30 CFR 56.5001Exposure limits for airborne contaminants. | 1 | 0 |
Safety activity
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee states its a progressive pain, pain progressed over a few days and reported on 5-26-2026, no known injury. While lifting and packaging stone employee experiences pain in right forearm extending down to EE's ring finger. Seen Dr. no tests performed, told to use ibuprofen and ice, but placed on restricted duty. Follow up with Dr. in one week.
Regular Safety and Health Inspection · 11.8 on-site hours
HANDTOOLS (NONPOWERED) · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
While installing the lower chisel head on a splitter using a prybar to locate the lower head bolt into place the bar slipped and the head shifted smashing the employees left index finger requiring 6 stitches. Employee is on limited duty with left hand until stiches are removed on 3/16/2026.
Non-Fatal Accident Investigation · 2.3 on-site hours
Regular Safety and Health Inspection · 8.3 on-site hours
HANDTOOLS (NONPOWERED) · DYS AWY FRM WRK & RESTRCTD ACT
Accident narrative
While trimming stone with a masons hammer a piece of the hammer head chipped off and embedded into the inside of the employees left wrist. The Dr says it will need to be removed and surgery is scheduled on 10/7/2025. Employee is allowed to work until then with restrictions
Regular Safety and Health Inspection · 6.5 on-site hours
Special Emphasis Programs · 1.3 on-site hours
Compliance Follow-up Inspection · 9.0 on-site hours
Compliance Follow-up Inspection · 0.0 on-site hours
56.5001(a)/56.5005 · $151.00 proposed
Regular Safety and Health Inspection · 26.0 on-site hours
Safety sources and definitions
MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-13.
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.
CFR headings link to the current Title 30 index; they are not historical legal determinations.
OWNERSHIP
Operator and controller history
Current ownership comes from MSHA Mines. Historical start and end dates come from MSHA Controller and Operator History.
—
Joseph ZimringcontrolsRolling Rock Building Stone IncoperatesROLLING ROCK PIT
msha-controller-operator-history · controller/operator co-tenure derived on mine 3608445—
Gary L Weller et alcontrolsRolling Rock Building Stone IncoperatesROLLING ROCK PIT
msha-controller-operator-history · controller/operator co-tenure derived on mine 3608445Other historical summaries · source-specific periods
RECORD SUMMARY
Production, safety and enforcement
These summaries use the periods stated on each card, independently of the reporting period above.
01 / SAFETYwatch
Accidents and injuries
68 historical accident/injury rows; 0 coded fatalities and 1,236 lost days across the published record.
ACCIDENT + INJURY RECORD13 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
33 violation rows across the full record; 5 carry an S&S flag and $3,836 appears in current assessed amounts.
ENFORCEMENT ACTIVITY4 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
35 personal; 2 area. 4 personal-sample rows have a published C/E ratio above 1; 0 noise rows have an action-level or PEL dose above 100%. These are separate measures, not a silica exceedance count. Silica results and sample status are shown separately.
OCCUPATIONAL EXPOSURE37 samples
personal-health-samplesarea-samples04 / PRODUCTIONcontext
Quarterly production and employment
17K employee hours and 37 summed average employees across reported subunits in the latest published quarter.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
9 contested-violation rows, 9 civil-penalty docket/decision rows, and 11 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE29 linked rows
conferencescontested-violationscivil-penalty-dockets-decisions06 / CONTRACTORScontext
Contractors
Contractors are linked through this mine’s violation or accident records. Their production and hours cover all their operations, so they are not included in this mine’s totals.
ENTITY-LEVEL CONTEXT0 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
66 inspection events and 1K published inspection hours across the historical record.
OVERSIGHT COVERAGE19 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 21 silica records across the mine’s published history.
Personal silica samples · concentration / limit
Quarterly mean · published C/E ratio
— No eligible measurements. * Quarter in progress. Means describe the available samples, not average exposure across the mine.
Quartz % is the sample’s quartz content; µg/m³ is its reported concentration. Personal C/E is the ratio to the limit published with that sample. Personal and area concentration units and void status are not specified in those source files.
| Date / sample | Dataset / analyte | Occupation / area | Measurement | Sample status | Published action |
|---|---|---|---|---|---|
| 000000202601609800 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Stone Polisher/Cutter | 0× published limitConcentration: 0000.17 · limit: 0000.00Source unit unspecified | Not reported | NO ACTIONInspection F03EFE6 |
Sources and interpretation
- Coal means use numeric concentrations from samples marked not voided, excluding control/invalid sample types and dates after the snapshot. Missing values remain null; reported zeroes remain zero.
- Quarterly means describe available samples, not mine-wide or worker-average exposure. Quarters with no eligible measurements remain empty; the current quarter is partial.
- Personal C/E is MSHA's published concentration-to-limit ratio. A value above 1 is not by itself a citation or a determination under the 2024 silica rule. Personal and area files do not publish a void-status field.
- Area records include bulk-dust analyses and are kept separate from personal exposure results. Their concentration units are not specified in the source dictionary.
- Missing samples do not establish safe conditions. Coal quartz percentage and concentration are separate measures. No compliance threshold is inferred for coal samples.
Coal quartz field definitions ↗Metal/nonmetal personal field definitions ↗Metal/nonmetal area field definitions ↗
EIA + TITLE 30
EIA production and cited regulations
EIA annual figures are reported separately from MSHA. Regulation links use the current eCFR snapshot.
Not present in the 2024 EIA coal workbook.
This can mean the operation is non-coal, inactive for the annual period, or outside the EIA-7A reporting population.
30 CFR 56.5001Exposure limits for airborne contaminants.1 recent row ↗30 CFR 56.14100Safety defects; examination, correction and records.1 recent row ↗30 CFR 56.12004Electrical conductors.4 recent rows ↗30 CFR 56.14132Horns and backup alarms.2 recent rows ↗30 CFR 56.12008Insulation and fittings for power wires and cables.1 recent row ↗30 CFR 56.12018Identification of power switches.1 recent row ↗30 CFR 56.3131Pit or quarry wall perimeter.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
980922556.5001(a)/56.5005Citation
971626656.14100(b)Citation
971150556.12004Citation
952363256.12004Citation
9522176—Order
941686756.12004Citation
941682656.14132(a)S&S
936608956.12008Citation
Coal dust, noise and other contaminants. Silica records above ↑
Respirable dust, <.1mgStone Polisher/Cutter
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgStone Polisher/Cutter
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgStone Polisher/Cutter
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgStone Polisher/Cutter
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgStone Polisher/Cutter
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgStone Polisher/Cutter
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgStone Polisher/Cutter
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgStone Polisher/Cutter
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
SOURCE COVERAGE
Reporting dates and coverage
14 datasets contain linked records. Missing datasets are listed below.
DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors68Mar 13, 2000—May 26, 2026mine-keyed
Addresses of Recordidentity · logistics1Dec 10, 1993—Dec 10, 1993mine-keyed
Assessed Violationscompliance · legal32Aug 30, 2001—Mar 17, 2025mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal9Oct 6, 2008—Jan 15, 2026mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal11Mar 12, 2010—Mar 25, 2025mine-keyed
Contested Violationscompliance · legal9Jul 11, 2007—Mar 17, 2025mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety—No published rowsabsent / not applicable
Contractor Employment and Production — Yearlycontractors · production · safety—No published rowsabsent / not applicable
Controller and Operator Historyidentity · compliance2Dec 1, 1993—Dec 1, 1993mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance318Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance81Not published—Not publishedmine-keyed
Inspectionssafety · compliance66Apr 5, 2000—Apr 16, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety2Apr 22, 2025—Apr 22, 2025mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety35Jul 11, 2007—Apr 21, 2026mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal33Aug 30, 2001—Mar 17, 2025mine-keyed
107(a) Orders Issuedsafety · compliance—No published rowsabsent / not applicable
NOTES
Limitations
- Contractor production is entity-level and is never represented as mine-attributable.
- Missing rows can mean no event, publication delay, identity mismatch, or inapplicability.