# Relationship history for MSHA mine 0503624

Current hierarchy: **Coors William K → Adolph Coors Company → Mauz Mannon Pit**

- 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:** M P M Inc → Mauz Mannon Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mobile Premix Concrete Inc → Mauz Mannon Pit; 1980-12-01 to 1983-02-03; source msha-controller-operator-history
- **controller_controls_operator:** M P M Inc → Mobile Premix Concrete Inc; 1980-12-01 to 1983-02-03; source msha-controller-operator-history
- **operator_operates_mine:** Adolph Coors Company → Mauz Mannon Pit; 1983-02-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Coors William K → Mauz Mannon Pit; 1983-02-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Coors William K → Adolph Coors Company; 1983-02-04 to current/open; source msha-controller-operator-history