MINE DETAILS
Chilton Quarry
MSHA MINE ID4700398
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Chilton Quarry43.96083, -88.21806Open 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
341,765reported 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 | 57,465 | 0.00 | 114 | 1/1 mines reporting |
| 2025 Q2 | 0 | 61,547 | 0.00 | 114 | 1/1 mines reporting |
| 2025 Q3 | 0 | 60,088 | 0.00 | 105 | 1/1 mines reporting |
| 2025 Q4 | 0 | 56,807 | 0.00 | 106 | 1/1 mines reporting |
| 2026 Q1 | 0 | 51,999 | 0.00 | 107 | 1/1 mines reporting |
| 2026 Q2 | 0 | 53,859 | 0.00 | 105 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
110 significant & substantial (S&S)
Accident records
50 records classified as fatality
Proposed penalties · USD
1,777.0011 of 11 violations with amounts
On-site inspection hours
46.256 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 | 2 | 0 | 418.00 | 2 | 0 | 1 | 9.8 |
| 2025-Q2 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2025-Q3 | 2 | 0 | 302.00 | 1 | 0 | 2 | 14.5 |
| 2025-Q4 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2026-Q1 | 5 | 0 | 755.00 | 0 | 0 | 1 | 14.5 |
| 2026-Q2 | 2 | 0 | 302.00 | 1 | 0 | 1 | 5.8 |
| 2026-Q3 | 0 | 0 | — | 1 | 0 | 1 | 1.8 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
Employee was working in the CMF on splitter 3. While moving stones, a sharp part of the stone cut the palm of the left hand through the glove.
103 (g) Written Notification Hazard Complaint Inspectio · 1.8 on-site hours
MACHINERY · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was operating Splitter #5. There was a piece of stone stuck in the machine and belt. Employee went to remove the stone piece, and EE's finger on EE's right hand was pinched, cut.
Regular Safety and Health Inspection · 5.8 on-site hours
56.12004 · $151.00 proposed
56.4201(a)(1) · $151.00 proposed
56.23003(b) · $151.00 proposed
56.14112(b) · $151.00 proposed
56.4201(a)(1) · $151.00 proposed
56.20003(b) · $151.00 proposed
56.14109(a) · $151.00 proposed
Regular Safety and Health Inspection · 14.5 on-site hours
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
While loading material onto the conveyor of TXS 3 in the NTV Flats dept, the stone tipped over, pinching EE's finger between the stone and the conveyor.
Spot Inspection · 10.5 on-site hours
Regular Safety and Health Inspection · 4.0 on-site hours
56.14116(a) · $151.00 proposed
56.14116(a) · $151.00 proposed
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
Employee in the NTV area was moving a stone off a conveyor belt when it fell on EE's foot.
56.14112(a)(2) · $209.00 proposed
56.14112(a)(2) · $209.00 proposed
Regular Safety and Health Inspection · 9.8 on-site hours
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
While trying to move a stone that was jammed on the feed conveyor of splitter #9 inside the CMF, the employee's hand slipped on some ice that was on the stone, and the employee's left middle finger was pinched between that stone and another stone that was on the conveyor. The finger was bruised, numb, and swollen after making contact between the two stones.
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.
—
Dominique Von WaldcontrolsBuechel Stone CorpoperatesChilton Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4700398—
Michael BuechelcontrolsBuechel Stone CorpoperatesChilton Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4700398—
Shaun BuechelcontrolsBuechel Stone CorpoperatesChilton Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4700398—
Michael Buechel et alcontrolsBuechel Stone CorpoperatesChilton Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4700398—
Scott Buechel et alcontrolsBuechel Stone CorpoperatesChilton Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4700398—
Timothy A BuechelcontrolsBuechel Stone CorpoperatesChilton Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4700398—
Francis BuechelcontrolsBuechels Stone QuarryoperatesChilton Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4700398Other 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
422 historical accident/injury rows; 0 coded fatalities and 1,963 lost days across the published record.
ACCIDENT + INJURY RECORD22 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
318 violation rows across the full record; 65 carry an S&S flag and $103,728 appears in current assessed amounts.
ENFORCEMENT ACTIVITY59 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
44 personal. 6 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 EXPOSURE44 samples
personal-health-samples04 / PRODUCTIONcontext
Quarterly production and employment
54K employee hours and 105 summed average employees across reported subunits in the latest published quarter.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
26 contested-violation rows, 26 civil-penalty docket/decision rows, and 2 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE54 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
106 inspection events and 2K published inspection hours across the historical record.
OVERSIGHT COVERAGE15 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 12 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 56.12004Electrical conductors.1 recent row ↗30 CFR 56.4201Inspection.2 recent rows ↗30 CFR 56.23003Requirements for written safety program.1 recent row ↗30 CFR 56.14112Construction and maintenance of guards.3 recent rows ↗30 CFR 56.20003Housekeeping.1 recent row ↗30 CFR 56.14109Unguarded conveyors with adjacent travelways.1 recent row ↗30 CFR 56.14116Hand-held power tools.2 recent rows ↗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.
511711656.12004Citation
511711556.4201(a)(1)Citation
511729156.23003(b)Citation
511729056.14112(b)Citation
511728956.4201(a)(1)Citation
511728856.20003(b)Citation
511728756.14109(a)Citation
511701256.14116(a)Citation
Coal dust, noise and other contaminants. Silica records above ↑
Unlisted Particulate, respirable, <1% QtzStone Polisher/Cutter
C/E: 00.00Concentration: 0000.80 · limit: 0000.00Source unit unspecified
Nuisance dust, respirable, <1% QtzBagging Operator
C/E: 00.02Concentration: 0000.17 · limit: 0010.00Source unit unspecified
Respirable dust, <.1mgFront-end Loader Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Unlisted Particulate, respirable, <1% QtzStone Polisher/Cutter
C/E: 00.00Concentration: 0000.46 · limit: 0000.00Source unit unspecified
Nuisance dust, respirable, <1% QtzCutting Mach Operator
C/E: 01.07Concentration: 0010.73 · limit: 0010.00Source unit unspecified
Nuisance dust, respirable, <1% QtzStone Polisher/Cutter
C/E: 00.19Concentration: 0001.94 · limit: 0010.00Source unit unspecified
SOURCE COVERAGE
Reporting dates and coverage
15 datasets contain linked records. Missing datasets are listed below.
DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors422Jan 5, 2000—Sep 14, 2026mine-keyed
Addresses of Recordidentity · logistics1Aug 14, 1974—Aug 14, 1974mine-keyed
Assessed Violationscompliance · legal316Apr 12, 2000—Apr 15, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal26Jun 29, 2011—Feb 28, 2014mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal2Mar 14, 2006—Mar 14, 2006mine-keyed
Contested Violationscompliance · legal26Jan 9, 2008—Mar 10, 2010mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety106Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety25Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance7Jan 1, 1950—Oct 16, 1979mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance310Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance79Not published—Not publishedmine-keyed
Inspectionssafety · compliance106Apr 12, 2000—Jul 13, 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 · safety44Mar 10, 2010—Sep 16, 2025mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal318Apr 12, 2000—Apr 15, 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.