# Relationship history for MSHA mine 2700236

Current hierarchy: **Pike Randolph K → Keith Construction Inc → Route 111a 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Lee Allard Inc → Route 111a Pit; 1980-01-01 to 1984-03-20; source msha-controller-operator-history
- **controller_controls_mine:** Lee  Allard → Route 111a Pit; 1980-01-01 to 1984-03-20; source msha-controller-operator-history
- **controller_controls_operator:** Lee  Allard → Lee Allard Inc; 1980-01-01 to 1984-03-20; source msha-controller-operator-history
- **operator_operates_mine:** Keith Construction Inc → Route 111a Pit; 1984-03-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pike Randolph K → Route 111a Pit; 1984-03-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pike Randolph K → Keith Construction Inc; 1984-03-21 to current/open; source msha-controller-operator-history