# Relationship history for MSHA mine 3003563

Current hierarchy: **Ryan L Ruark → Endless Mountain Minerals LLC → Struble Quarry**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** SimplyStoneLLC → Struble Quarry; 2006-08-31 to 2014-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Mitchell L  Bush → Struble Quarry; 2006-08-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mitchell L  Bush → SimplyStoneLLC; 2006-08-31 to 2014-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Michael M  Pavelski et al → Struble Quarry; 2012-10-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** PBS Bluestone Co. → Struble Quarry; 2014-07-10 to 2016-03-20; source msha-controller-operator-history
- **controller_controls_operator:** Michael M  Pavelski et al → PBS Bluestone Co.; 2014-07-10 to 2016-03-20; source msha-controller-operator-history
- **controller_controls_operator:** Robert A  Pavelski et al → PBS Bluestone Co.; 2014-07-10 to 2016-03-20; source msha-controller-operator-history
- **operator_operates_mine:** RUCOLE STONE LLC → Struble Quarry; 2016-03-21 to 2022-05-09; source msha-controller-operator-history
- **controller_controls_mine:** William  Ruark et al → Struble Quarry; 2016-03-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Ruark et al → RUCOLE STONE LLC; 2016-03-21 to 2022-05-09; source msha-controller-operator-history
- **controller_controls_operator:** Robert A Coleman et al → RUCOLE STONE LLC; 2016-03-21 to 2022-05-09; source msha-controller-operator-history
- **operator_operates_mine:** Endless Mountain Minerals LLC → Struble Quarry; 2022-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ryan L Ruark → Struble Quarry; 2022-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ryan L Ruark → Endless Mountain Minerals LLC; 2022-05-10 to current/open; source msha-controller-operator-history