# Relationship history for MSHA mine 4405585

Current hierarchy: **Roberts Thomas W → Cavalier Mining Corp → No 3**

- 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:** Williams Garry L → No 3; 1975-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Quality Fuels Limited → No 3; 1981-01-01 to 1981-03-26; source msha-controller-operator-history
- **controller_controls_operator:** Williams Garry L → Quality Fuels Limited; 1981-01-01 to 1981-03-26; source msha-controller-operator-history
- **operator_operates_mine:** Lone Mountain Coal Company Inc → No 3; 1981-03-27 to 1982-07-11; source msha-controller-operator-history
- **controller_controls_mine:** Charles  Turner → No 3; 1981-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Turner → Lone Mountain Coal Company Inc; 1981-03-27 to 1982-07-11; source msha-controller-operator-history
- **controller_controls_mine:** Roberts Thomas W Et Al → No 3; 1981-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ryder Energy Inc → No 3; 1982-07-12 to 1983-05-14; source msha-controller-operator-history
- **controller_controls_mine:** Richardson Dowell → No 3; 1982-07-12 to 1985-07-14; source msha-controller-operator-history
- **controller_controls_operator:** Richardson Dowell → Ryder Energy Inc; 1982-07-12 to 1983-05-14; source msha-controller-operator-history
- **operator_operates_mine:** Emcoal Mining Inc → No 3; 1983-05-15 to 1983-09-18; source msha-controller-operator-history
- **controller_controls_mine:** Altizer Emory R → No 3; 1983-05-15 to 1983-09-18; source msha-controller-operator-history
- **controller_controls_operator:** Altizer Emory R → Emcoal Mining Inc; 1983-05-15 to 1983-09-18; source msha-controller-operator-history
- **operator_operates_mine:** Ryder Energy Inc → No 3; 1983-09-19 to 1985-07-14; source msha-controller-operator-history
- **controller_controls_operator:** Richardson Dowell → Ryder Energy Inc; 1983-09-19 to 1985-07-14; source msha-controller-operator-history
- **operator_operates_mine:** First Coal Inc → No 3; 1985-07-15 to 1986-01-23; source msha-controller-operator-history
- **controller_controls_mine:** Altizer Danny W → No 3; 1985-07-15 to 1986-01-23; source msha-controller-operator-history
- **controller_controls_operator:** Altizer Danny W → First Coal Inc; 1985-07-15 to 1986-01-23; source msha-controller-operator-history
- **operator_operates_mine:** Barry & John Coal Company Inc → No 3; 1986-01-24 to 1987-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Absher Troy W Jr → No 3; 1986-01-24 to 1987-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Absher Troy W Jr → Barry & John Coal Company Inc; 1986-01-24 to 1987-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Tos-Aoh Mining Inc → No 3; 1987-05-01 to 1987-09-20; source msha-controller-operator-history
- **controller_controls_mine:** Daniels Walter B Et Al → No 3; 1987-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniels Walter B Et Al → Tos-Aoh Mining Inc; 1987-05-01 to 1987-09-20; source msha-controller-operator-history
- **operator_operates_mine:** Gamble Energy Inc → No 3; 1987-09-21 to 1988-07-18; source msha-controller-operator-history
- **controller_controls_mine:** Gamble Homer E → No 3; 1987-09-21 to 1988-07-18; source msha-controller-operator-history
- **controller_controls_operator:** Gamble Homer E → Gamble Energy Inc; 1987-09-21 to 1988-07-18; source msha-controller-operator-history
- **operator_operates_mine:** Cavalier Mining Corp → No 3; 1988-07-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roberts Thomas W Et Al → Cavalier Mining Corp; 1988-07-19 to current/open; source msha-controller-operator-history