# Relationship history for MSHA mine 4801706

Current hierarchy: **Rich  Couilard; Joe  McPhie → Rock Well Petroleum (U.S.), Inc → Osage Field Project**

- 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:** Rock Well Petroleum (U.S.), Inc → Osage Field Project; 2007-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rich  Couilard et al → Osage Field Project; 2007-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rich  Couilard et al → Rock Well Petroleum (U.S.), Inc; 2007-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe  McPhie → Rock Well Petroleum (U.S.), Inc; 2007-01-29 to current/open; source msha-controller-operator-history