# Relationship history for MSHA mine 4607139

Current hierarchy: **Chris  Cline → Mystic Energy Inc → B L Mining #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:** Asbury Curtis → B L Mining #3; 1985-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rand Coal Company Inc → B L Mining #3; 1986-06-01 to 1987-05-17; source msha-controller-operator-history
- **controller_controls_mine:** Phillips Harrison → B L Mining #3; 1986-06-01 to 1987-05-17; source msha-controller-operator-history
- **controller_controls_operator:** Phillips Harrison → Rand Coal Company Inc; 1986-06-01 to 1987-05-17; source msha-controller-operator-history
- **controller_controls_mine:** Chris  Cline → B L Mining #3; 1986-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rand Coal Company Inc → B L Mining #3; 1987-05-18 to 1989-10-15; source msha-controller-operator-history
- **controller_controls_mine:** Paul R  Phillips et al → B L Mining #3; 1987-05-18 to 1989-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Paul R  Phillips et al → Rand Coal Company Inc; 1987-05-18 to 1989-10-15; source msha-controller-operator-history
- **operator_operates_mine:** Interstate Mining Corp → B L Mining #3; 1989-10-16 to 1994-03-29; source msha-controller-operator-history
- **controller_controls_operator:** Asbury Curtis → Interstate Mining Corp; 1989-10-16 to 1994-03-29; source msha-controller-operator-history
- **operator_operates_mine:** Mystic Energy Inc → B L Mining #3; 1994-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chris  Cline → Mystic Energy Inc; 1994-03-30 to current/open; source msha-controller-operator-history