# Graystone Wash Screen

- **MSHA mine ID:** 4703836
- **Status:** Intermittent
- **Type / commodity:** Surface / Sand, Industrial NEC
- **Location:** Rock, WI
- **Operator:** Southern Wisconsin Aggregate Corporation
- **Controller:** Daniel L  Silha
- **Public source rows linked:** 68
- **Source coverage:** 8 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Daniel L  Silha (0100109) → Southern Wisconsin Aggregate Corporation (0118130) → Graystone Wash Screen (4703836)**

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

## Controller and operator valid-time history

- **Kyle  Frank et al → Frank Bros., Inc.:** 2019-01-01 through 2019-10-06; derived from co-tenure at mine 4703836; source `msha-controller-operator-history`.
- **Timothy  Frank et al → Frank Bros., Inc.:** 2019-01-01 through 2019-10-06; derived from co-tenure at mine 4703836; source `msha-controller-operator-history`.
- **Donald E  Frank et al → Frank Bros., Inc.:** 2019-01-01 through 2015-09-14; derived from co-tenure at mine 4703836; source `msha-controller-operator-history`.
- **Daniel L  Silha → Southern Wisconsin Aggregate Corporation:** 2019-10-07 through current/open; derived from co-tenure at mine 4703836; 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 — 3 since 2021:** Violations and penalties 8 violation rows across the full record; 2 carry an S&S flag and $1,453 appears in current assessed amounts.
3. **HEALTH — 0 samples:** Occupational health samples No published samples. 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 13 employee hours and 1 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 0 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 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 — 5 since 2021:** Inspections 10 inspection events and 73 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 56.14105 — Procedures during repairs or maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14105
- **30 CFR 56.12004 — Electrical conductors.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.12013 — Splices and repairs of power cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12013
- **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
- **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 56.20003 — Housekeeping.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **30 CFR 41.11 — Notification by operator.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-G/part-41/subpart-B/section-41.11

## Source coverage

- **Addresses of Record:** 1 rows; 2019-12-04 through 2019-12-04; source ID `msha-addresses`
- **Assessed Violations:** 8 rows; 2019-07-02 through 2024-08-02; source ID `msha-assessed-violations`
- **Controller and Operator History:** 4 rows; 2019-01-01 through 2019-10-07; source ID `msha-controller-operator-history`
- **Inspections:** 10 rows; 2019-05-22 through 2026-06-17; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 28 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 8 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Violations:** 8 rows; 2019-07-02 through 2024-08-02; 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/graystone-wash-screen-4703836`
- JSON: `/api/v1/mines/graystone-wash-screen-4703836`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4703836/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4703836/relationships`
- MCP resource: `mine://4703836/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`