# Relationship history for MSHA mine 4003141

Current hierarchy: **Thurman  Harness → Harness Coal Company LLC → Mine No. 1**

- 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

- **operator_operates_mine:** Bear Cove Llc → Mine No. 1; 1999-03-01 to 2000-08-02; source msha-controller-operator-history
- **controller_controls_mine:** Sterling J  Gregory et al → Mine No. 1; 1999-03-01 to 2000-08-02; source msha-controller-operator-history
- **controller_controls_operator:** Sterling J  Gregory et al → Bear Cove Llc; 1999-03-01 to 2000-08-02; source msha-controller-operator-history
- **operator_operates_mine:** Channel Coal Inc → Mine No. 1; 2000-08-03 to 2001-11-14; source msha-controller-operator-history
- **controller_controls_mine:** Darryl  Roberts → Mine No. 1; 2000-08-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darryl  Roberts → Channel Coal Inc; 2000-08-03 to 2001-11-14; source msha-controller-operator-history
- **operator_operates_mine:** WEST FRK 2  LLC → Mine No. 1; 2001-11-15 to 2003-02-13; source msha-controller-operator-history
- **controller_controls_mine:** Glenn  Castle → Mine No. 1; 2001-11-15 to 2002-06-05; source msha-controller-operator-history
- **controller_controls_operator:** Glenn  Castle → WEST FRK 2  LLC; 2001-11-15 to 2002-06-05; source msha-controller-operator-history
- **controller_controls_mine:** Mark  Sumner et al → Mine No. 1; 2002-06-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Sumner et al → WEST FRK 2  LLC; 2002-06-06 to 2003-02-13; source msha-controller-operator-history
- **controller_controls_operator:** Stuart T  Hood et al → WEST FRK 2  LLC; 2002-06-06 to 2003-02-13; source msha-controller-operator-history
- **operator_operates_mine:** Huntsville Energy Company, Inc. → Mine No. 1; 2003-02-14 to 2006-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth R  Strunk → Mine No. 1; 2003-02-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth R  Strunk → Huntsville Energy Company, Inc.; 2003-02-14 to 2006-07-10; source msha-controller-operator-history
- **operator_operates_mine:** Harness Coal Company LLC → Mine No. 1; 2006-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thurman  Harness → Mine No. 1; 2006-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thurman  Harness → Harness Coal Company LLC; 2006-07-11 to current/open; source msha-controller-operator-history