# Relationship history for MSHA mine 1001959

Current hierarchy: **Larry  Peak → Peak Sand & Gravel Inc → Plant #2**

- 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:** Larry  Peak → Plant #2; 1993-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Peak Sand & Gravel Inc → Plant #2; 1999-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Peak → Peak Sand & Gravel Inc; 1999-07-01 to current/open; source msha-controller-operator-history