MINE DETAILS
Wrentham Quarry
MSHA MINE ID1900019
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Wrentham Quarry42.05028, -71.36333Open 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
50,051reported 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 | 7,716 | 0.00 | 13 | 1/1 mines reporting |
| 2025 Q2 | 0 | 7,687 | 0.00 | 12 | 1/1 mines reporting |
| 2025 Q3 | 0 | 8,668 | 0.00 | 14 | 1/1 mines reporting |
| 2025 Q4 | 0 | 9,861 | 0.00 | 15 | 1/1 mines reporting |
| 2026 Q1 | 0 | 7,581 | 0.00 | 14 | 1/1 mines reporting |
| 2026 Q2 | 0 | 8,538 | 0.00 | 13 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
40 significant & substantial (S&S)
Accident records
70 records classified as fatality
Proposed penalties · USD
604.004 of 4 violations with amounts
On-site inspection hours
27.755 inspections · 5 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 | 1 | 0 | 1 | 6.0 |
| 2025-Q2 | 1 | 0 | 151.00 | 1 | 0 | 1 | 8.0 |
| 2025-Q3 | 0 | 0 | — | 1 | 0 | 0 | — |
| 2025-Q4 | 0 | 0 | — | 1 | 0 | 0 | — |
| 2026-Q1 | 0 | 0 | — | 1 | 0 | 1 | 8.0 |
| 2026-Q2 | 2 | 0 | 302.00 | 0 | 0 | 2 | 5.8 |
| 2026-Q3 | 0 | 0 | — | 2 | 0 | 0 | — |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
Employee was pushing out a bushing on an excavator when EE hit EE's left hand index finger with a hammer causing a laceration. Employee was brought to urgent care where wound was cleaned and stitched.
FALLING/SLIDING/ROLLING MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
Employee was cleaning cat walks around the #1 Conn-Weld screen when they were struck by a rock in their right neck, shoulder, and arm.
Regular Safety and Health Inspection · 5.8 on-site hours
56.14132(b)(1) · $151.00 proposed
56.16006 · $151.00 proposed
Spot Inspection · 0.0 on-site hours
HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
Employee was working under machine while servicing a loader CO UNIT# L-27 when dust fell into their right eye. Employee went to urgent care after flushing eye and still feeling like something was in it, employee was told nothing is in there and there were some scratches. Employee returned to work next day.
Regular Safety and Health Inspection · 8.0 on-site hours
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
Employee was lifting scale parts off a pallet when EE's left thumb got stuck between two parts. EE went to the ER and hand specialist. EE has a break in EE's thumb.
POWERED HAULAGE · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
Employee was driving company unit L-27 mini loader when the right window swung open, then swung back and shattered causing glass to go all over employee causing minor cuts on right arm and hand. On 8/7/25 EE noticed EE's right hand was swelling up. EE reported the accident on 8/8/25, and went to urgent care. They put EE on antibiotics and gave no restrictions to return to work.
SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was walking up steps to get to 5-1/2' cone crusher when EE tripped on the 5th step and fell hurting EE's left leg above EE's ankle. EE was brought to the emergency room by EE's supervisor and put in a walking boot.
Regular Safety and Health Inspection · 8.0 on-site hours
56.14132(a) · $151.00 proposed
56.14107(a) · $151.00 proposed
Regular Safety and Health Inspection · 6.0 on-site hours
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was trying to turn a butterfly valve when they lost footing and fell. They felt pain in their upper back.
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.
—
S M Lorusso & Sons InccontrolsS M Lorusso & Sons IncoperatesWrentham Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 1900019Other 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
31 historical accident/injury rows; 0 coded fatalities and 743 lost days across the published record.
ACCIDENT + INJURY RECORD13 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
128 violation rows across the full record; 26 carry an S&S flag and $22,166 appears in current assessed amounts.
ENFORCEMENT ACTIVITY23 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
23 personal. 1 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 EXPOSURE23 samples
personal-health-samples04 / PRODUCTIONcontext
Quarterly production and employment
9K employee hours and 13 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 0 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE18 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 CONTEXT3 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
65 inspection events and 1K published inspection hours across the historical record.
OVERSIGHT COVERAGE14 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 15 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 |
|---|---|---|---|---|---|
| No silica records match these filters. Missing samples do not establish safe conditions. | |||||
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 56.14132Horns and backup alarms.2 recent rows ↗30 CFR 56.16006Protection of gas cylinder valves.1 recent row ↗30 CFR 56.14107Moving machine parts.3 recent rows ↗30 CFR 56.14205Machinery, equipment, and tools.1 recent row ↗30 CFR 56.14100Safety defects; examination, correction and records.1 recent row ↗30 CFR 56.12028Testing grounding systems.1 recent row ↗30 CFR 56.4101Warning signs.1 recent row ↗30 CFR 50.20-1General instructions for completing MSHA Form 7000-1.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
507837556.14132(b)(1)Citation
507837456.16006Citation
507006456.14132(a)Citation
507001356.14107(a)Citation
985165556.14205Citation
985165456.14107(b)Citation
985151756.14107(a)Citation
985151656.14100(b)Citation
Coal dust, noise and other contaminants. Silica records above ↑
Respirable dust, <.1mgCrusher Oper/Worker
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgFront-end Loader Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgTruck Driver
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgTruck Driver
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 · contractors31Jun 16, 2008—Sep 14, 2026mine-keyed
Addresses of Recordidentity · logistics1Feb 14, 2012—Feb 14, 2012mine-keyed
Assessed Violationscompliance · legal121Apr 11, 2001—Jun 1, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal9Dec 5, 2011—Jan 16, 2024mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal—No published rowsabsent / not applicable
Contested Violationscompliance · legal9Mar 3, 2011—Jul 11, 2023mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety124Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety36Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance1Jan 1, 1950—Jan 1, 1950mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance212Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance54Not published—Not publishedmine-keyed
Inspectionssafety · compliance65Jul 27, 2000—Jun 1, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety—No published rowsabsent / not applicable
Metal and Nonmetal Personal Health Sampleshealth · safety23Apr 12, 2001—Dec 6, 2023mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal128Apr 11, 2001—Jun 1, 2026mine-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.