# Relationship history for MSHA mine 4604844

Current hierarchy: **Brian  Cline → Albatross Mining Corp → Bluestone #41**

- 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:** Hawley Charbon → Bluestone #41; 1974-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hawley Coal Mining Corp → Bluestone #41; 1975-10-01 to 1988-04-04; source msha-controller-operator-history
- **controller_controls_operator:** Hawley Charbon → Hawley Coal Mining Corp; 1975-10-01 to 1988-04-04; source msha-controller-operator-history
- **controller_controls_mine:** Simpson & Lester Coals Inc → Bluestone #41; 1986-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M & A Mining Inc → Bluestone #41; 1988-04-05 to 1991-10-10; source msha-controller-operator-history
- **controller_controls_mine:** Paris  Meadows et al → Bluestone #41; 1988-04-05 to 1991-10-10; source msha-controller-operator-history
- **controller_controls_operator:** Paris  Meadows et al → M & A Mining Inc; 1988-04-05 to 1991-10-10; source msha-controller-operator-history
- **operator_operates_mine:** G M Mining Inc → Bluestone #41; 1991-10-11 to 1994-11-27; source msha-controller-operator-history
- **controller_controls_mine:** Paris  Meadows et al → Bluestone #41; 1991-10-11 to 1994-11-27; source msha-controller-operator-history
- **controller_controls_operator:** Paris  Meadows et al → G M Mining Inc; 1991-10-11 to 1994-11-27; source msha-controller-operator-history
- **operator_operates_mine:** Simpson & Lester Coals Inc → Bluestone #41; 1994-11-28 to 1995-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Simpson & Lester Coals Inc → Simpson & Lester Coals Inc; 1994-11-28 to 1995-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Terry  Cline → Bluestone #41; 1995-10-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** R & S Coal Company Inc → Bluestone #41; 1995-12-01 to 1997-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Robert L  Johnson → Bluestone #41; 1995-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert L  Johnson → R & S Coal Company Inc; 1995-12-01 to 1997-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Cline Excavation Corp → Bluestone #41; 1997-03-01 to 1998-05-27; source msha-controller-operator-history
- **controller_controls_operator:** Terry  Cline → Cline Excavation Corp; 1997-03-01 to 1998-05-27; source msha-controller-operator-history
- **controller_controls_mine:** Brian  Cline → Bluestone #41; 1997-07-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Albatross Mining Corp → Bluestone #41; 1998-05-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian  Cline → Albatross Mining Corp; 1998-05-28 to current/open; source msha-controller-operator-history