# Relationship history for MSHA mine 1519273

Current hierarchy: **Robin Roy Belcher → PB Dirt Movers Inc. → Blair Face Up**

- 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:** Robin Roy Belcher → Blair Face Up; 1980-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jason D  Finley → Blair Face Up; 2008-04-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Raintite Contracting Inc. → Blair Face Up; 2008-07-24 to 2009-11-11; source msha-controller-operator-history
- **controller_controls_operator:** Jason D  Finley → Raintite Contracting Inc.; 2008-07-24 to 2009-11-11; source msha-controller-operator-history
- **operator_operates_mine:** PB Dirt Movers Inc. → Blair Face Up; 2009-11-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robin Roy Belcher → PB Dirt Movers Inc.; 2009-11-12 to current/open; source msha-controller-operator-history