# Relationship history for MSHA mine 2401633

Current hierarchy: **Bayles R G → Indian Creek Development Inc → Townsend 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:** Bayles R G → Townsend Mine; 1980-05-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** S & G Mining Company → Townsend Mine; 1981-07-01 to 1982-09-20; source msha-controller-operator-history
- **controller_controls_mine:** Wytana Inc & Missouri Valley Construction Co → Townsend Mine; 1981-07-01 to 1983-08-22; source msha-controller-operator-history
- **controller_controls_operator:** Wytana Inc & Missouri Valley Construction Co → S & G Mining Company; 1981-07-01 to 1982-09-20; source msha-controller-operator-history
- **operator_operates_mine:** Indian Creek Development Inc → Townsend Mine; 1982-09-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bayles R G → Indian Creek Development Inc; 1982-09-21 to current/open; source msha-controller-operator-history