# Relationship history for MSHA mine 1511708

Current hierarchy: **Barnette Charles R → B & G Energy Company Inc → No 1**

- 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:** Double D Energy Corp → No 1; 1978-11-01 to 1980-02-13; source msha-controller-operator-history
- **controller_controls_mine:** Price Raymond → No 1; 1978-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Price Raymond → Double D Energy Corp; 1978-11-01 to 1980-02-13; source msha-controller-operator-history
- **controller_controls_mine:** Rice Jerry → No 1; 1980-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kan-Tuck Coal Company Inc → No 1; 1980-02-14 to 1981-02-21; source msha-controller-operator-history
- **controller_controls_operator:** Rice Jerry → Kan-Tuck Coal Company Inc; 1980-02-14 to 1981-02-21; source msha-controller-operator-history
- **operator_operates_mine:** B & G Energy Company Inc → No 1; 1981-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Barnette Charles R Et Al → No 1; 1981-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barnette Charles R Et Al → B & G Energy Company Inc; 1981-02-22 to current/open; source msha-controller-operator-history