# Relationship history for MSHA mine 4105145

Current hierarchy: **Quade  Weaver; Kirk  Stevens → K Q Construction LLC → K Q Construction LLC**

- 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:** K Q Construction LLC → K Q Construction LLC; 2015-08-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Quade  Weaver et al → K Q Construction LLC; 2015-08-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Quade  Weaver et al → K Q Construction LLC; 2015-08-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kirk  Stevens et al → K Q Construction LLC; 2015-08-17 to current/open; source msha-controller-operator-history