# Relationship history for MSHA mine 1516079

Current hierarchy: **Collie  Hall → Traveller Coal Corp → Traveller No 2**

- 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:** Collie  Hall et al → Traveller No 2; 1982-05-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bowling Charles D Et Al → Traveller No 2; 1983-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & P Coal Company Inc → Traveller No 2; 1987-06-01 to 1988-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Bowling Charles D Et Al → C & P Coal Company Inc; 1987-06-01 to 1988-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Traveller Coal Corp → Traveller No 2; 1988-02-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Collie  Hall et al → Traveller Coal Corp; 1988-02-29 to current/open; source msha-controller-operator-history