# Relationship history for MSHA mine 3503901

Current hierarchy: **Tonya Marie  Mobley; George Scott  Mobley → Dog Lake Construction Inc. → Deadman 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Dog Lake Construction Inc. → Deadman Pit; 2020-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** George Scott  Mobley et al → Deadman Pit; 2020-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George Scott  Mobley et al → Dog Lake Construction Inc.; 2020-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tonya Marie  Mobley et al → Dog Lake Construction Inc.; 2020-04-16 to current/open; source msha-controller-operator-history