# Relationship history for MSHA mine 4404155

Current hierarchy: **Roberts Palmer & Pauline Richardson → Pee Wee Augering Company → Surface 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:** R G Pope Construction Company → Surface No 1; 1975-02-01 to 1977-08-21; source msha-controller-operator-history
- **controller_controls_mine:** Pope R G Construction Company → Surface No 1; 1975-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pope R G Construction Company → R G Pope Construction Company; 1975-02-01 to 1977-08-21; source msha-controller-operator-history
- **operator_operates_mine:** Davis Coal Company → Surface No 1; 1977-08-22 to 1977-11-02; source msha-controller-operator-history
- **controller_controls_mine:** Davis Paul E → Surface No 1; 1977-08-22 to 1977-11-02; source msha-controller-operator-history
- **controller_controls_operator:** Davis Paul E → Davis Coal Company; 1977-08-22 to 1977-11-02; source msha-controller-operator-history
- **operator_operates_mine:** Pee Wee Augering Company → Surface No 1; 1977-11-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Roberts Palmer & Pauline Richardson → Surface No 1; 1977-11-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roberts Palmer & Pauline Richardson → Pee Wee Augering Company; 1977-11-03 to current/open; source msha-controller-operator-history