# Relationship history for MSHA mine 5001589

Current hierarchy: **Henricks Robert J & James W Belfield → Robert J Henricks-James W Belfield → Discovery Mining**

- 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:** Robert J Henricks-James W Belfield → Discovery Mining; 1989-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Henricks Robert J & James W Belfield → Discovery Mining; 1989-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Henricks Robert J & James W Belfield → Robert J Henricks-James W Belfield; 1989-09-01 to current/open; source msha-controller-operator-history