# Relationship history for MSHA mine 5001457

Current hierarchy: **Toghotthele Corporation → Toghotthele Corporation → 10th Street 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:** Doyon Construction Company Inc → 10th Street Pit; 1983-09-01 to 2018-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Demientiess Samuel S → 10th Street Pit; 1983-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Demientiess Samuel S → Doyon Construction Company Inc; 1983-09-01 to 2018-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Tog Services → 10th Street Pit; 2018-06-01 to 2024-07-16; source msha-controller-operator-history
- **controller_controls_mine:** Toghotthele Corporation → 10th Street Pit; 2018-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Toghotthele Corporation → Tog Services; 2018-06-01 to 2024-07-16; source msha-controller-operator-history
- **operator_operates_mine:** Toghotthele Corporation → 10th Street Pit; 2024-07-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Toghotthele Corporation → 10th Street Pit; 2024-07-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Toghotthele Corporation → Toghotthele Corporation; 2024-07-17 to current/open; source msha-controller-operator-history