# Relationship history for MSHA mine 0102922

Current hierarchy: **Brown Barry L → Lost Creek Coal Company Inc → Mine #8**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Brown Barry L → Mine #8; 1985-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rand S  Clark → Mine #8; 1991-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lost Creek Coal Company Inc → Mine #8; 1991-09-01 to 1993-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Brown Barry L → Lost Creek Coal Company Inc; 1991-09-01 to 1993-09-30; source msha-controller-operator-history
- **operator_operates_mine:** R C Enterprises → Mine #8; 1993-10-01 to 1994-02-14; source msha-controller-operator-history
- **controller_controls_operator:** Rand S  Clark → R C Enterprises; 1993-10-01 to 1994-02-14; source msha-controller-operator-history
- **operator_operates_mine:** Lost Creek Coal Company Inc → Mine #8; 1994-02-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brown Barry L → Lost Creek Coal Company Inc; 1994-02-15 to current/open; source msha-controller-operator-history