# Hilltop Quarry

- **MSHA mine ID:** 2700475
- **Status:** Intermittent
- **Type / commodity:** Surface / Dimension Sandstone
- **Location:** Grafton, NH
- **Operator:** Presby Construction Inc.
- **Controller:** Trevor  Presby; Thaddeus  Presby
- **Public source rows linked:** 394
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Trevor  Presby; Thaddeus  Presby (0112121) → Presby Construction Inc. (0074063) → Hilltop Quarry (2700475)**

Current identity source: `msha-mines`. This is a current snapshot, not a historical claim.

## Controller and operator valid-time history

- **John B.  Simpson → Hilltop Quarry, LLC:** 2013-06-27 through 2019-04-25; derived from co-tenure at mine 2700475; source `msha-controller-operator-history`.
- **David W  Presby et al → Presby Construction Inc.:** 2019-04-26 through 2014-01-31; derived from co-tenure at mine 2700475; source `msha-controller-operator-history`.
- **Trevor  Presby et al → Presby Construction Inc.:** 2019-04-26 through current/open; derived from co-tenure at mine 2700475; source `msha-controller-operator-history`.
- **Thaddeus  Presby et al → Presby Construction Inc.:** 2019-04-26 through current/open; derived from co-tenure at mine 2700475; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 9
- Interval anomalies: 1
- Valid-time bounds: inclusive; date granularity; null end means open-ended in the upstream history row; not independent proof of present control.
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 8 since 2021:** Violations and penalties 26 violation rows across the full record; 4 carry an S&S flag and $12,191 appears in current assessed amounts.
3. **HEALTH — 1 samples:** Occupational health samples 1 personal. 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.
4. **PRODUCTION — 0 tons:** Quarterly production and employment 62 employee hours and 2 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 20 linked rows:** Contests, conferences and decisions 10 contested-violation rows, 10 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 1 linked entities:** 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.
7. **INSPECTIONS — 7 since 2021:** Inspections 16 inspection events and 188 published inspection hours across the historical record.

## EIA annual operating context

No matched record in the 2024 EIA coal-public workbook. This may be inapplicable for a non-coal operation.

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 56.11001 — Safe access.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001
- **30 CFR 56.4101 — Warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101
- **30 CFR 56.4201 — Inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **30 CFR 56.3200 — Correction of hazardous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-B/section-56.3200
- **30 CFR 56.20011 — Barricades and warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20011
- **30 CFR 56.14132 — Horns and backup alarms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **30 CFR 56.6306 — Loading, blasting, and security.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-E/section-56.6306
- **30 CFR 56.15002 — Hard hats.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15002
- **30 CFR 56.9300 — Berms or guardrails.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300
- **30 CFR 56.14107 — Moving machine parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 46.9 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9

## Source coverage

- **Addresses of Record:** 1 rows; 2020-04-21 through 2020-04-21; source ID `msha-addresses`
- **Assessed Violations:** 26 rows; 2013-06-27 through 2023-06-06; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 10 rows; 2014-10-30 through 2014-10-30; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 10 rows; 2013-06-27 through 2013-10-15; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 141 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 24 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 2013-06-27 through 2019-04-26; source ID `msha-controller-operator-history`
- **Inspections:** 16 rows; 2013-06-27 through 2026-07-23; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 106 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 28 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Metal and Nonmetal Personal Health Samples:** 1 rows; 2020-07-22 through 2020-07-22; source ID `msha-personal-health-samples`
- **Violations:** 26 rows; 2013-06-27 through 2023-06-06; source ID `msha-violations`

## Caveats

- This is public-record decision support, not legal advice or an official MSHA record.
- Missing data can indicate no event, publication delay, an unresolved identity, or inapplicability.
- Contractor production data is entity-level and is not attributed to this mine.

## Alternate representations

- HTML: `/mines/hilltop-quarry-2700475`
- JSON: `/api/v1/mines/hilltop-quarry-2700475`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2700475/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2700475/relationships`
- MCP resource: `mine://2700475/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`