# Relationship history for MSHA mine 1511751

Current hierarchy: **Pellitier Robert A → National Coal & Recovery Inc → Plant 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:** Banner Industries & Kinemotive Energy → Plant No 2; 1978-11-28 to 1982-05-20; source msha-controller-operator-history
- **operator_operates_mine:** Kencoal Associates → Plant No 2; 1979-01-01 to 1981-07-07; source msha-controller-operator-history
- **controller_controls_operator:** Banner Industries & Kinemotive Energy → Kencoal Associates; 1979-01-01 to 1981-07-07; source msha-controller-operator-history
- **controller_controls_mine:** Pellitier Robert A → Plant No 2; 1980-10-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** National Coal & Recovery Inc → Plant No 2; 1981-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pellitier Robert A → National Coal & Recovery Inc; 1981-07-08 to current/open; source msha-controller-operator-history