# Relationship history for MSHA mine 1517676

Current hierarchy: **Patterson James → Birdeye Coal Company Inc → #4 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Patterson James → #4 Mine; 1994-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Birdeye Coal Company Inc → #4 Mine; 1995-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patterson James → Birdeye Coal Company Inc; 1995-05-01 to current/open; source msha-controller-operator-history