# Relationship history for MSHA mine 3609775

Current hierarchy: **Stacey  McClain → S.McClain Stone Co. Inc. → S. MCCLAIN STONE QUARRY #7**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Stacey  McClain → S. MCCLAIN STONE QUARRY #7; 2005-08-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** BC Quarries → S. MCCLAIN STONE QUARRY #7; 2008-07-01 to 2018-04-22; source msha-controller-operator-history
- **controller_controls_mine:** David L  Karp → S. MCCLAIN STONE QUARRY #7; 2008-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David L  Karp → BC Quarries; 2008-07-01 to 2018-04-22; source msha-controller-operator-history
- **controller_controls_mine:** David R  Brown → S. MCCLAIN STONE QUARRY #7; 2016-12-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** D R Brown's Hauling → S. MCCLAIN STONE QUARRY #7; 2018-04-23 to 2026-03-22; source msha-controller-operator-history
- **controller_controls_operator:** David R  Brown → D R Brown's Hauling; 2018-04-23 to 2026-03-22; source msha-controller-operator-history
- **operator_operates_mine:** S.McClain Stone Co. Inc. → S. MCCLAIN STONE QUARRY #7; 2026-03-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stacey  McClain → S.McClain Stone Co. Inc.; 2026-03-23 to current/open; source msha-controller-operator-history