# Astec Track Screen

- **MSHA mine ID:** 2700429
- **Status:** Intermittent
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Carroll, NH
- **Operator:** AMBROSE BROS., INC.
- **Controller:** Robert P  Ambrose; Robert J  Ambrose
- **Public source rows linked:** 185
- **Source coverage:** 11 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Robert P  Ambrose; Robert J  Ambrose (0134581) → AMBROSE BROS., INC. (L30331) → Astec Track Screen (2700429)**

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

## Controller and operator valid-time history

- **Robert P  Ambrose et al → AMBROSE BROS., INC.:** 2007-11-27 through 2015-12-31; derived from co-tenure at mine 2700429; source `msha-controller-operator-history`.
- **Edward A  Ambrose et al → AMBROSE BROS., INC.:** 2007-11-27 through 2015-12-31; derived from co-tenure at mine 2700429; source `msha-controller-operator-history`.
- **Robert P  Ambrose et al → AMBROSE BROS., INC.:** 2016-01-01 through current/open; derived from co-tenure at mine 2700429; source `msha-controller-operator-history`.
- **Robert J  Ambrose et al → AMBROSE BROS., INC.:** 2016-01-01 through current/open; derived from co-tenure at mine 2700429; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 7
- Interval anomalies: 0
- 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 — 12 since 2021:** Violations and penalties 31 violation rows across the full record; 6 carry an S&S flag and $6,133 appears in current assessed amounts.
3. **HEALTH — 2 samples:** Occupational health samples 2 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 186 employee hours and 2 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 4 linked rows:** Contests, conferences and decisions 2 contested-violation rows, 2 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 0 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 — 9 since 2021:** Inspections 22 inspection events and 233 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 56.18002 — Examination of working places.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002
- **30 CFR 56.23002 — Written safety program.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-T/section-56.23002
- **30 CFR 56.9100 — Traffic control.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9100
- **30 CFR 46.6 — Newly hired experienced miner training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.6
- **30 CFR 56.14207 — Parking procedures for unattended equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14207
- **30 CFR 46.8 — Annual refresher training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.8
- **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 56.4201 — 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 56.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 56.1000 — Notification of commencement of operations and closing of mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-A/section-56.1000

## Source coverage

- **Addresses of Record:** 1 rows; 2024-12-20 through 2024-12-20; source ID `msha-addresses`
- **Assessed Violations:** 30 rows; 2008-06-03 through 2026-07-27; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 2 rows; 2010-09-03 through 2020-01-13; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 2 rows; 2009-07-08 through 2019-08-06; source ID `msha-contested-violations`
- **Controller and Operator History:** 4 rows; 2007-11-27 through 2007-11-27; source ID `msha-controller-operator-history`
- **Inspections:** 22 rows; 2008-06-02 through 2026-07-26; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 74 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 16 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:** 2 rows; 2019-09-18 through 2023-02-14; source ID `msha-personal-health-samples`
- **Violations:** 31 rows; 2008-06-03 through 2026-07-27; 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/astec-track-screen-2700429`
- JSON: `/api/v1/mines/astec-track-screen-2700429`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2700429/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2700429/relationships`
- MCP resource: `mine://2700429/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`