# Relationship history for MSHA mine 0504176

Current hierarchy: **Moore Michael → B-Mining Company → Deep Creek Placer**

- 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

- **controller_controls_mine:** Moore Michael → Deep Creek Placer; 1984-09-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B-Mining Company → Deep Creek Placer; 1986-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Moore Michael → B-Mining Company; 1986-09-01 to current/open; source msha-controller-operator-history