# Relationship history for MSHA mine 5001704

Current hierarchy: **Jason C  Johnson → J C Johnson & Son → Buds Gravel #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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** J C Johnson & Son → Buds Gravel #1; 2001-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jason C  Johnson → Buds Gravel #1; 2001-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason C  Johnson → J C Johnson & Son; 2001-05-01 to current/open; source msha-controller-operator-history