# Relationship history for MSHA mine 3606574

Current hierarchy: **Felton Clifford → Latrobe Mining Company Inc → Latrobe Mining Co Loading Facilit**

- 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:** Freeport Coal Company Inc → Latrobe Mining Co Loading Facilit; 1977-12-01 to 1987-10-26; source msha-controller-operator-history
- **controller_controls_mine:** Saul John E → Latrobe Mining Co Loading Facilit; 1977-12-01 to 1987-10-26; source msha-controller-operator-history
- **controller_controls_operator:** Saul John E → Freeport Coal Company Inc; 1977-12-01 to 1987-10-26; source msha-controller-operator-history
- **operator_operates_mine:** Avonmore Rail Loading Inc → Latrobe Mining Co Loading Facilit; 1987-10-27 to 1992-06-23; source msha-controller-operator-history
- **controller_controls_mine:** Schall Paul → Latrobe Mining Co Loading Facilit; 1987-10-27 to 1992-06-23; source msha-controller-operator-history
- **controller_controls_operator:** Schall Paul → Avonmore Rail Loading Inc; 1987-10-27 to 1992-06-23; source msha-controller-operator-history
- **operator_operates_mine:** Latrobe Mining Company Inc → Latrobe Mining Co Loading Facilit; 1992-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Felton Clifford → Latrobe Mining Co Loading Facilit; 1992-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Felton Clifford → Latrobe Mining Company Inc; 1992-06-24 to current/open; source msha-controller-operator-history