# Relationship history for MSHA mine 4607177

Current hierarchy: **Lambert Charles → Lambert Coal Company Inc → Outpost**

- 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:** Lambert Charles → Outpost; 1983-02-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth D  Bowles → Outpost; 1985-04-08 to 1987-01-15; source msha-controller-operator-history
- **operator_operates_mine:** Dynasty Coal Company Inc → Outpost; 1986-08-01 to 1987-01-15; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth D  Bowles → Dynasty Coal Company Inc; 1986-08-01 to 1987-01-15; source msha-controller-operator-history
- **operator_operates_mine:** Lambert Coal Company Inc → Outpost; 1987-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lambert Charles → Lambert Coal Company Inc; 1987-01-16 to current/open; source msha-controller-operator-history