# Relationship history for MSHA mine 3003890

Current hierarchy: **Eric  Perkins → Rick Perkins Contracting → Denny Pit**

- 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:** Roderick L  Perkins → Denny Pit; 2012-08-06 to 2026-05-18; source msha-controller-operator-history
- **operator_operates_mine:** Rick Perkins Contracting → Denny Pit; 2013-06-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roderick L  Perkins → Rick Perkins Contracting; 2013-06-25 to 2026-05-18; source msha-controller-operator-history
- **controller_controls_mine:** Eric  Perkins et al → Denny Pit; 2026-05-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eric  Perkins et al → Rick Perkins Contracting; 2026-05-19 to current/open; source msha-controller-operator-history