# Relationship history for MSHA mine 0301937

Current hierarchy: **Lorre  Moore Parrish; Tera M  Harper → Sheridan White Rock, Inc. → Sheridan White Rock Inc.-Blake Rd**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Terry D  Moore → Sheridan White Rock Inc.-Blake Rd; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sheridan White Rock → Sheridan White Rock Inc.-Blake Rd; 2006-08-22 to 2009-11-18; source msha-controller-operator-history
- **controller_controls_operator:** Terry D  Moore → Sheridan White Rock; 2006-08-22 to 2009-11-18; source msha-controller-operator-history
- **operator_operates_mine:** Sheridan White Rock, Inc. → Sheridan White Rock Inc.-Blake Rd; 2009-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lorre  Moore Parrish et al → Sheridan White Rock Inc.-Blake Rd; 2009-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lorre  Moore Parrish et al → Sheridan White Rock, Inc.; 2009-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tera M  Harper et al → Sheridan White Rock, Inc.; 2009-11-19 to current/open; source msha-controller-operator-history