# Relationship history for MSHA mine 3609075

Current hierarchy: **J Clifford  Forrest III → Rosebud Mining Company → Rossmoyne No. 1 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:** J Clifford  Forrest III → Rossmoyne No. 1 Mine; 1979-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas J  Smith → Rossmoyne No. 1 Mine; 1991-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** T.J.S. Mining, Inc. → Rossmoyne No. 1 Mine; 2002-09-01 to 2010-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Thomas J  Smith → T.J.S. Mining, Inc.; 2002-09-01 to 2010-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Rosebud Mining Company → Rossmoyne No. 1 Mine; 2011-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** J Clifford  Forrest III → Rosebud Mining Company; 2011-01-01 to current/open; source msha-controller-operator-history