# Relationship history for MSHA mine 4103370

Current hierarchy: **Percifield Paul → R E Hable Company → Pioneer Portable Crusher**

- 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:** R E Hable Company → Pioneer Portable Crusher; 1985-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Percifield Paul → Pioneer Portable Crusher; 1985-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Percifield Paul → R E Hable Company; 1985-04-01 to current/open; source msha-controller-operator-history