# Relationship history for MSHA mine 0504744

Current hierarchy: **Richard  Connell → Connell Resources Inc → Portable Wash Plant #2**

- 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:** Richard  Connell → Portable Wash Plant #2; 1982-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Connell Resources Inc → Portable Wash Plant #2; 2002-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Connell → Connell Resources Inc; 2002-04-15 to current/open; source msha-controller-operator-history