# Relationship history for MSHA mine 1518654

Current hierarchy: **Rodney  Bentley; Ted  Thornsberry → T.R.C. Mining Corporation → #1**

- 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:** Roger N  Bentley → #1; 1988-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J. & R. Coal Co. → #1; 2003-08-05 to 2006-02-13; source msha-controller-operator-history
- **controller_controls_operator:** Roger N  Bentley → J. & R. Coal Co.; 2003-08-05 to 2006-02-13; source msha-controller-operator-history
- **operator_operates_mine:** T.R.C. Mining Corporation → #1; 2006-02-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ted  Thornsberry et al → #1; 2006-02-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ted  Thornsberry et al → T.R.C. Mining Corporation; 2006-02-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rodney  Bentley et al → T.R.C. Mining Corporation; 2006-02-14 to current/open; source msha-controller-operator-history