# Relationship history for MSHA mine 2402628

Current hierarchy: **Gregory  Peck; John  Souza → Oilfield Rock & Logistics LLC → K & K Opsahl Pit Area 2 Site**

- 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

- **operator_operates_mine:** Oilfield Rock & Logistics LLC → K & K Opsahl Pit Area 2 Site; 2012-06-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John  Souza et al → K & K Opsahl Pit Area 2 Site; 2012-06-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Souza et al → Oilfield Rock & Logistics LLC; 2012-06-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gregory  Peck et al → Oilfield Rock & Logistics LLC; 2012-06-19 to current/open; source msha-controller-operator-history