# Relationship history for MSHA mine 1001651

Current hierarchy: **Manning & Sanford → Manning & Sanford → Charla Placer**

- 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:** Manning & Sanford → Charla Placer; 1984-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Manning & Sanford → Charla Placer; 1984-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Manning & Sanford → Manning & Sanford; 1984-08-01 to current/open; source msha-controller-operator-history