# Relationship history for MSHA mine 4202608

Current hierarchy: **Brad  Bohman; Brent  Bohman → Bohman Aggregates LLC → Cobble Mountain**

- 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:** Western Elite Mining Company → Cobble Mountain; 2013-08-07 to 2014-10-03; source msha-controller-operator-history
- **controller_controls_mine:** Robert W  Edwards et al → Cobble Mountain; 2013-08-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert W  Edwards et al → Western Elite Mining Company; 2013-08-07 to 2014-10-03; source msha-controller-operator-history
- **controller_controls_operator:** Bryson D  Hinkins et al → Western Elite Mining Company; 2013-08-07 to 2014-10-03; source msha-controller-operator-history
- **operator_operates_mine:** Bohman Aggregates LLC → Cobble Mountain; 2014-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brent  Bohman et al → Cobble Mountain; 2014-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brent  Bohman et al → Bohman Aggregates LLC; 2014-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad  Bohman et al → Bohman Aggregates LLC; 2014-10-04 to current/open; source msha-controller-operator-history