# Relationship history for MSHA mine 4202794

Current hierarchy: **Dallas  Hakes; Martin  White → Maverick Crushing LLC → Portable 2**

- 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

- **controller_controls_mine:** Martin T  White → Portable 2; 2018-08-13 to 2025-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Dallas  Hakes et al → Portable 2; 2025-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Maverick Crushing LLC → Portable 2; 2025-12-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin T  White → Maverick Crushing LLC; 2025-12-17 to 2025-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Dallas  Hakes et al → Maverick Crushing LLC; 2025-12-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin  White et al → Maverick Crushing LLC; 2025-12-17 to current/open; source msha-controller-operator-history