MINE DETAILS
Heidelberg Materials High Rock Quarry
MSHA MINE ID4501999
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Heidelberg Materials High Rock Quarry47.81583, -121.97472Open 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
60,293reported 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 | 11,268 | 0.00 | 22 | 1/1 mines reporting |
| 2025 Q2 | 0 | 9,656 | 0.00 | 19 | 1/1 mines reporting |
| 2025 Q3 | 0 | 9,433 | 0.00 | 19 | 1/1 mines reporting |
| 2025 Q4 | 0 | 9,302 | 0.00 | 19 | 1/1 mines reporting |
| 2026 Q1 | 0 | 9,927 | 0.00 | 18 | 1/1 mines reporting |
| 2026 Q2 | 0 | 10,707 | 0.00 | 19 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
245 significant & substantial (S&S)
Accident records
10 records classified as fatality
Proposed penalties · USD
13,472.0024 of 24 violations with amounts
On-site inspection hours
84.256 inspections · 6 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 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2025-Q2 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2025-Q3 | 11 | 2 | 6,873.00 | 0 | 0 | 2 | 35.8 |
| 2025-Q4 | 1 | 1 | 1,968.00 | 1 | 0 | 1 | 5.0 |
| 2026-Q1 | 9 | 2 | 3,993.00 | 0 | 0 | 2 | 26.5 |
| 2026-Q2 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2026-Q3 | 3 | 0 | 638.00 | 0 | 0 | 1 | 17.0 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
Regular Safety and Health Inspection · 17.0 on-site hours
56.16005 · $151.00 proposed
56.14101(a)(2) · $336.00 proposed
56.12032 · $151.00 proposed
Compliance Follow-up Inspection · 1.3 on-site hours
56.11001 · $151.00 proposed
56.12002 · $288.00 proposed
56.12018 · $193.00 proposed
56.12004 · $642.00 proposed
46.5(a) · S&S · $561.00 proposed
56.23003(b) · $151.00 proposed
56.11001 · S&S · $1,431.00 proposed
56.12004 · $288.00 proposed
56.4402 · $288.00 proposed
Regular Safety and Health Inspection · 25.3 on-site hours
MACHINERY · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
Employee was using an angle grinder kneeling on the ground grinding a piece of steel. the grinder had guard in place and a handle. when finished they went to get up with the grinder in right hand the grinder still had some momentum and struck left hand index finger. They called the supervisor and went to urgent care and received 8 stiches. Employee was wearing C.R. gloves
56.6306(e) · S&S · $1,968.00 proposed
Verbal Hazard Complaint Inspections · 5.0 on-site hours
Health Technical Investigation · 12.0 on-site hours
56.12018 · $193.00 proposed
56.12018 · $193.00 proposed
56.20003(a) · S&S · $959.00 proposed
56.3200 · S&S · $3,184.00 proposed
56.12002 · $642.00 proposed
56.11027 · $193.00 proposed
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.
—
Heidelberg Materials AGcontrolsHM Pacific Northwest, Inc.operatesHeidelberg Materials High Rock Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4501999—
Heidelberg Materials AGcontrolsCadman (Rock) IncoperatesHeidelberg Materials High Rock Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4501999—
Cimenteries Cbr CementbedrijvencontrolsCadman (Rock) IncoperatesHeidelberg Materials High Rock Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4501999—
Paul J Taylor et alcontrolsCadman Rock Company IncoperatesHeidelberg Materials High Rock Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4501999—
Albert J FirchaucontrolsIndustrial Rock Products IncoperatesHeidelberg Materials High Rock Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4501999Other 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
38 historical accident/injury rows; 0 coded fatalities and 320 lost days across the published record.
ACCIDENT + INJURY RECORD3 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
261 violation rows across the full record; 33 carry an S&S flag and $61,795 appears in current assessed amounts.
ENFORCEMENT ACTIVITY82 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHcontext
Occupational health samples
216 personal; 1 area. 0 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 EXPOSURE217 samples
personal-health-samplesarea-samples04 / PRODUCTIONcontext
Quarterly production and employment
11K employee hours and 19 summed average employees across reported subunits in the latest published quarter.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
0 contested-violation rows, 0 civil-penalty docket/decision rows, and 1 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE1 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 CONTEXT4 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
69 inspection events and 2K published inspection hours across the historical record.
OVERSIGHT COVERAGE21 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 |
|---|---|---|---|---|---|
| 000000202602777500 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Laborer, Bullgang | 0× published limitConcentration: 0000.13 · limit: 0000.00Source unit unspecified | Not reported | NO ACTIONInspection F024FEF |
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 56.16005Securing gas cylinders.1 recent row ↗30 CFR 56.14101Brakes.1 recent row ↗30 CFR 56.12032Inspection and cover plates.1 recent row ↗30 CFR 56.11001Safe access.2 recent rows ↗30 CFR 56.12002Controls and switches.1 recent row ↗30 CFR 56.12018Identification of power switches.1 recent row ↗30 CFR 56.12004Electrical conductors.2 recent rows ↗30 CFR 46.5New miner training.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
510577356.16005Citation
510577256.14101(a)(2)Citation
510577156.12032Citation
510728856.11001Citation
510728756.12002Citation
510728656.12018Citation
510728556.12004Citation
510728446.5(a)S&S
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, <.1mgMechanic
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Unlisted Particulate, respirable, <1% QtzMechanic
C/E: 00.00Concentration: 0000.48 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgCrusher Oper/Worker
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgLaborer, Bullgang
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Unlisted Particulate, respirable, <1% QtzFront-end Loader Operator
C/E: 00.00Concentration: 0000.18 · 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 · contractors38Jan 19, 2000—Nov 7, 2025mine-keyed
Addresses of Recordidentity · logistics1Oct 3, 1984—Oct 3, 1984mine-keyed
Assessed Violationscompliance · legal260Jan 3, 2001—Jul 7, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal—No published rowsabsent / not applicable
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal1Jan 7, 2014—Jan 7, 2014mine-keyed
Contested Violationscompliance · legal—No published rowsabsent / not applicable
Contractor Employment and Production — Quarterlycontractors · production · safety231Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety56Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance5Jan 1, 1950—Jan 31, 2023mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance256Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance57Not published—Not publishedmine-keyed
Inspectionssafety · compliance69Jan 3, 2001—Jul 7, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety1Sep 3, 2025—Sep 3, 2025mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety216Jan 17, 2001—Jul 8, 2026mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal261Jan 3, 2001—Jul 7, 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.