# Relationship history for MSHA mine 1512699

Current hierarchy: **Smith Kenny L → Pecks Branch Mining 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:** Hardin-Mapes Coal Corp → No 1; 1981-01-01 to 1987-11-03; source msha-controller-operator-history
- **controller_controls_mine:** Hardin William F Et Al → No 1; 1981-01-01 to 1987-11-03; source msha-controller-operator-history
- **controller_controls_operator:** Hardin William F Et Al → Hardin-Mapes Coal Corp; 1981-01-01 to 1987-11-03; source msha-controller-operator-history
- **operator_operates_mine:** Pecks Branch Mining Company Inc → No 1; 1987-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Smith Kenny L → No 1; 1987-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Smith Kenny L → Pecks Branch Mining Company Inc; 1987-11-04 to current/open; source msha-controller-operator-history