# Relationship history for MSHA mine 3609300

Current hierarchy: **Rickey E  Hause → BLACK DOG INC → DODSON #1**

- 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:** BLACK DOG INC → DODSON #1; 2004-12-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rickey E  Hause → DODSON #1; 2004-12-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rickey E  Hause → BLACK DOG INC; 2004-12-27 to current/open; source msha-controller-operator-history