# Relationship history for MSHA mine 4103826

Current hierarchy: **Epley Paul J → Tca Building Company Inc → Tca Jewett Mine**

- 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:** Tca Building Company Inc → Tca Jewett Mine; 1994-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Epley Paul J → Tca Jewett Mine; 1994-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Epley Paul J → Tca Building Company Inc; 1994-07-01 to current/open; source msha-controller-operator-history