# Relationship history for MSHA mine 4102948

Current hierarchy: **Brett  Strebeck; Robert  Lane; Steve  Wright → Cooper & Woodruff Inc → Wilson Pit**

- 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:** Robert  Lane et al → Wilson Pit; 1979-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cooper & Woodruff Inc → Wilson Pit; 1980-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Lane et al → Cooper & Woodruff Inc; 1980-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Wright et al → Cooper & Woodruff Inc; 1980-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brett  Strebeck  et al → Cooper & Woodruff Inc; 1980-01-01 to current/open; source msha-controller-operator-history