# Relationship history for MSHA mine 1001705

Current hierarchy: **Larry  Johnson → Mountain Home Redi-Mix Inc → Mountain Home Redi-Mix Portable Plant**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Mountain Home Redi-Mix Inc → Mountain Home Redi-Mix Portable Plant; 1985-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Larry  Johnson → Mountain Home Redi-Mix Portable Plant; 1985-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Johnson → Mountain Home Redi-Mix Inc; 1985-12-01 to current/open; source msha-controller-operator-history