# Relationship history for MSHA mine 4406642

Current hierarchy: **Peters Sue → Sabro Mining Company Inc → #1**

- 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:** Sabro Mining Company Inc → #1; 1991-05-01 to 1991-08-08; source msha-controller-operator-history
- **controller_controls_mine:** Stacy Elmer Russell → #1; 1991-05-01 to 1991-08-08; source msha-controller-operator-history
- **controller_controls_operator:** Stacy Elmer Russell → Sabro Mining Company Inc; 1991-05-01 to 1991-08-08; source msha-controller-operator-history
- **operator_operates_mine:** Sabro Mining Company Inc → #1; 1991-08-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peters Sue → #1; 1991-08-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peters Sue → Sabro Mining Company Inc; 1991-08-09 to current/open; source msha-controller-operator-history