# Relationship history for MSHA mine 1516955

Current hierarchy: **Breeding Jerry → Anne Brooke Coal Corp → No 1 Surface**

- 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:** Sheena Coal Corp → No 1 Surface; 1990-09-01 to 1992-04-08; source msha-controller-operator-history
- **controller_controls_mine:** Breeding Jerry → No 1 Surface; 1990-09-01 to 1992-04-08; source msha-controller-operator-history
- **controller_controls_operator:** Breeding Jerry → Sheena Coal Corp; 1990-09-01 to 1992-04-08; source msha-controller-operator-history
- **operator_operates_mine:** Crc Enterprises Inc → No 1 Surface; 1992-04-09 to 1993-03-29; source msha-controller-operator-history
- **controller_controls_mine:** Chaney George R → No 1 Surface; 1992-04-09 to 1993-03-29; source msha-controller-operator-history
- **controller_controls_operator:** Chaney George R → Crc Enterprises Inc; 1992-04-09 to 1993-03-29; source msha-controller-operator-history
- **operator_operates_mine:** Anne Brooke Coal Corp → No 1 Surface; 1993-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Breeding Jerry → No 1 Surface; 1993-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Breeding Jerry → Anne Brooke Coal Corp; 1993-03-30 to current/open; source msha-controller-operator-history