# Relationship history for MSHA mine 4003006

Current hierarchy: **William M  Bale → U S Coal Inc → #7**

- 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:** Rose Michael Et Al → #7; 1986-10-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cheyenne Coal Company → #7; 1989-02-01 to 1989-11-28; source msha-controller-operator-history
- **controller_controls_mine:** Campbell Donald Et Al → #7; 1989-02-01 to 1989-11-28; source msha-controller-operator-history
- **controller_controls_operator:** Campbell Donald Et Al → Cheyenne Coal Company; 1989-02-01 to 1989-11-28; source msha-controller-operator-history
- **operator_operates_mine:** K & M Mining Inc → #7; 1989-11-29 to 1990-05-07; source msha-controller-operator-history
- **controller_controls_mine:** Maxwell Donald L → #7; 1989-11-29 to 1990-05-07; source msha-controller-operator-history
- **controller_controls_operator:** Maxwell Donald L → K & M Mining Inc; 1989-11-29 to 1990-05-07; source msha-controller-operator-history
- **operator_operates_mine:** Rough Hill Coal Company → #7; 1990-05-08 to 1990-08-15; source msha-controller-operator-history
- **controller_controls_operator:** Rose Michael Et Al → Rough Hill Coal Company; 1990-05-08 to 1990-08-15; source msha-controller-operator-history
- **operator_operates_mine:** Big Four Mining Inc → #7; 1990-08-16 to 1992-01-25; source msha-controller-operator-history
- **controller_controls_mine:** Drinnon Nathan Et Al → #7; 1990-08-16 to 1992-01-25; source msha-controller-operator-history
- **controller_controls_operator:** Drinnon Nathan Et Al → Big Four Mining Inc; 1990-08-16 to 1992-01-25; source msha-controller-operator-history
- **operator_operates_mine:** Michigan Energy Inc → #7; 1992-01-26 to 1992-12-08; source msha-controller-operator-history
- **controller_controls_mine:** Roth Larry & Manal Garmo → #7; 1992-01-26 to 1992-12-08; source msha-controller-operator-history
- **controller_controls_operator:** Roth Larry & Manal Garmo → Michigan Energy Inc; 1992-01-26 to 1992-12-08; source msha-controller-operator-history
- **operator_operates_mine:** U S Coal Inc → #7; 1992-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William M  Bale → #7; 2001-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William M  Bale → U S Coal Inc; 2001-04-01 to current/open; source msha-controller-operator-history