# Relationship history for MSHA mine 0405382

Current hierarchy: **Corkey  Harmon → Stimpel Wiebelhaus Associates Inc. → BEAR GULCH ENTERPRISES INC**

- 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

- **operator_operates_mine:** Bear Gulch Enterprises Inc → BEAR GULCH ENTERPRISES INC; 1999-08-01 to 2024-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Marshall  Worley  et al → BEAR GULCH ENTERPRISES INC; 1999-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marshall  Worley  et al → Bear Gulch Enterprises Inc; 1999-08-01 to 2024-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Carol  Worley  et al → Bear Gulch Enterprises Inc; 1999-08-01 to 2024-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Phil  George et al → BEAR GULCH ENTERPRISES INC; 2007-11-20 to 2011-06-06; source msha-controller-operator-history
- **controller_controls_mine:** Corkey  Harmon → BEAR GULCH ENTERPRISES INC; 2011-06-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Stimpel Wiebelhaus Associates Inc. → BEAR GULCH ENTERPRISES INC; 2024-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phil  George et al → Stimpel Wiebelhaus Associates Inc.; 2024-06-01 to 2011-06-06; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Tyler et al → Stimpel Wiebelhaus Associates Inc.; 2024-06-01 to 2011-06-06; source msha-controller-operator-history
- **controller_controls_operator:** Corkey  Harmon → Stimpel Wiebelhaus Associates Inc.; 2024-06-01 to current/open; source msha-controller-operator-history