# Relationship history for MSHA mine 1601322

Current hierarchy: **James L  Core; Richard U  Core → Custom Materials Inc → HUNT 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

- **operator_operates_mine:** Custom Materials Inc → HUNT PIT; 1997-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James L  Core  et al → HUNT PIT; 1997-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James L  Core  et al → Custom Materials Inc; 1997-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard U  Core  et al → Custom Materials Inc; 1997-10-01 to current/open; source msha-controller-operator-history