# Relationship history for MSHA mine 1601444

Current hierarchy: **Maxwell L  Johnson III → AGGREGATE INDUSTRIES → Red Stick**

- 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:** Maxwell L  Johnson III et al → Red Stick; 1998-10-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gulf Coast Gravel → Red Stick; 2006-09-20 to 2009-08-02; source msha-controller-operator-history
- **controller_controls_operator:** Maxwell L  Johnson III et al → Gulf Coast Gravel; 2006-09-20 to 2009-08-02; source msha-controller-operator-history
- **operator_operates_mine:** AGGREGATE INDUSTRIES → Red Stick; 2009-08-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Maxwell L  Johnson III et al → Red Stick; 2009-08-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Maxwell L  Johnson III et al → AGGREGATE INDUSTRIES; 2009-08-03 to current/open; source msha-controller-operator-history