# Relationship history for MSHA mine 3402043

Current hierarchy: **Bradley R  McMillin → MAC STONE → PLEASENT VALLEY 70 ACRES**

- 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:** MAC STONE → PLEASENT VALLEY 70 ACRES; 2007-08-28 to 2008-03-06; source msha-controller-operator-history
- **controller_controls_mine:** Brad  McMillin et al → PLEASENT VALLEY 70 ACRES; 2007-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad  McMillin et al → MAC STONE; 2007-08-28 to 2008-03-06; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Watson et al → MAC STONE; 2007-08-28 to 2008-03-06; source msha-controller-operator-history
- **operator_operates_mine:** MAC STONE → PLEASENT VALLEY 70 ACRES; 2008-03-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bradley R  McMillin → PLEASENT VALLEY 70 ACRES; 2008-03-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bradley R  McMillin → MAC STONE; 2008-03-07 to current/open; source msha-controller-operator-history