# Relationship history for MSHA mine 3503683

Current hierarchy: **James  Sturdivant; Diane  Sturdivant → Dutchman Butte Mining LLC → Willis Creek Rock**

- 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:** Willis Creek Rock LLC → Willis Creek Rock; 2007-12-04 to 2024-06-04; source msha-controller-operator-history
- **controller_controls_mine:** Kela B  Barton et al → Willis Creek Rock; 2007-12-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kela B  Barton et al → Willis Creek Rock LLC; 2007-12-04 to 2024-06-04; source msha-controller-operator-history
- **operator_operates_mine:** Dutchman Butte Mining LLC → Willis Creek Rock; 2024-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Diane  Sturdivant et al → Willis Creek Rock; 2024-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Diane  Sturdivant et al → Dutchman Butte Mining LLC; 2024-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Sturdivant et al → Dutchman Butte Mining LLC; 2024-06-05 to current/open; source msha-controller-operator-history