# Relationship history for MSHA mine 4606056

Current hierarchy: **Stacy Francis Ray → Ycats Coal Company → No 4**

- 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:** Stepp Gale B → No 4; 1977-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pine Tree Coal Company → No 4; 1979-08-01 to 1980-09-16; source msha-controller-operator-history
- **controller_controls_operator:** Stepp Gale B → Pine Tree Coal Company; 1979-08-01 to 1980-09-16; source msha-controller-operator-history
- **operator_operates_mine:** A R P A Inc → No 4; 1980-09-17 to 1983-09-13; source msha-controller-operator-history
- **controller_controls_mine:** Tomblin Archie & Paul → No 4; 1980-09-17 to 1983-09-13; source msha-controller-operator-history
- **controller_controls_operator:** Tomblin Archie & Paul → A R P A Inc; 1980-09-17 to 1983-09-13; source msha-controller-operator-history
- **operator_operates_mine:** Aztec Mining Corp → No 4; 1983-09-14 to 1984-08-28; source msha-controller-operator-history
- **controller_controls_mine:** Corns Jim → No 4; 1983-09-14 to 1984-08-28; source msha-controller-operator-history
- **controller_controls_operator:** Corns Jim → Aztec Mining Corp; 1983-09-14 to 1984-08-28; source msha-controller-operator-history
- **operator_operates_mine:** Revenue Management Service Inc → No 4; 1984-08-29 to 1985-06-17; source msha-controller-operator-history
- **controller_controls_mine:** King Dennis → No 4; 1984-08-29 to 1985-06-17; source msha-controller-operator-history
- **controller_controls_operator:** King Dennis → Revenue Management Service Inc; 1984-08-29 to 1985-06-17; source msha-controller-operator-history
- **operator_operates_mine:** Barrett Mining Corp → No 4; 1985-06-18 to 1986-07-29; source msha-controller-operator-history
- **controller_controls_mine:** Gibson Russell Jr → No 4; 1985-06-18 to 1986-07-29; source msha-controller-operator-history
- **controller_controls_operator:** Gibson Russell Jr → Barrett Mining Corp; 1985-06-18 to 1986-07-29; source msha-controller-operator-history
- **operator_operates_mine:** J & T Coal Company Inc → No 4; 1986-07-30 to 1986-10-19; source msha-controller-operator-history
- **controller_controls_mine:** Brooks Kathy → No 4; 1986-07-30 to 1986-10-19; source msha-controller-operator-history
- **controller_controls_operator:** Brooks Kathy → J & T Coal Company Inc; 1986-07-30 to 1986-10-19; source msha-controller-operator-history
- **operator_operates_mine:** Zachery Mining Inc → No 4; 1986-10-20 to 1987-04-07; source msha-controller-operator-history
- **controller_controls_mine:** Johnson Willie Jr → No 4; 1986-10-20 to 1987-04-07; source msha-controller-operator-history
- **controller_controls_operator:** Johnson Willie Jr → Zachery Mining Inc; 1986-10-20 to 1987-04-07; source msha-controller-operator-history
- **operator_operates_mine:** Ycats Coal Company → No 4; 1987-04-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stacy Francis Ray → No 4; 1987-04-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stacy Francis Ray → Ycats Coal Company; 1987-04-08 to current/open; source msha-controller-operator-history