# Relationship history for MSHA mine 4202471

Current hierarchy: **Mark D  Dotson → Western Utah Copper Company → Bawana Mine**

- 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:** Mark D  Dotson → Bawana Mine; 2006-03-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Western Utah Copper Company → Bawana Mine; 2008-01-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark D  Dotson → Western Utah Copper Company; 2008-01-11 to current/open; source msha-controller-operator-history