# Relationship history for MSHA mine 2003107

Current hierarchy: **Bob  Rogers; Dave  Murrell → Prolime Corp → CLARK 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Prolime Corp → CLARK RD.; 1999-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bob  Rogers et al → CLARK RD.; 1999-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bob  Rogers et al → Prolime Corp; 1999-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dave  Murrell et al → Prolime Corp; 1999-05-01 to current/open; source msha-controller-operator-history