# Relationship history for MSHA mine 1514329

Current hierarchy: **Williams R B → Caperton Mining Inc → 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Niece Mining Company Inc → No 1 Surface; 1983-11-01 to 1985-09-23; source msha-controller-operator-history
- **controller_controls_mine:** Niece Lena → No 1 Surface; 1983-11-01 to 1985-09-23; source msha-controller-operator-history
- **controller_controls_operator:** Niece Lena → Niece Mining Company Inc; 1983-11-01 to 1985-09-23; source msha-controller-operator-history
- **operator_operates_mine:** Caperton Mining Inc → No 1 Surface; 1985-09-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Williams R B → No 1 Surface; 1985-09-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Williams R B → Caperton Mining Inc; 1985-09-24 to current/open; source msha-controller-operator-history