# Relationship history for MSHA mine 1000866

Current hierarchy: **Thunder Mountain Gold Inc → Thunder Mountain Resources, Inc./Owyhee Gold Trust → South Mountain 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

- **operator_operates_mine:** William A Bowes Inc → South Mountain Mine; 1950-01-01 to 2012-09-24; source msha-controller-operator-history
- **controller_controls_mine:** Bowes William A → South Mountain Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bowes William A → William A Bowes Inc; 1950-01-01 to 2012-09-24; source msha-controller-operator-history
- **operator_operates_mine:** Thunder Mountain Resources, Inc./Owyhee Gold Trust → South Mountain Mine; 2012-09-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thunder Mountain Gold Inc → South Mountain Mine; 2012-09-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thunder Mountain Gold Inc → Thunder Mountain Resources, Inc./Owyhee Gold Trust; 2012-09-25 to current/open; source msha-controller-operator-history