# Relationship history for MSHA mine 2402329

Current hierarchy: **Keith A  Indreland → K & T Stone & Gravel LLC → K & T Stone and Gravel 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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** K & T Enterprises → K & T Stone and Gravel LLC; 2003-05-08 to 2006-09-16; source msha-controller-operator-history
- **controller_controls_mine:** Keith A  Indreland et al → K & T Stone and Gravel LLC; 2003-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith A  Indreland et al → K & T Enterprises; 2003-05-08 to 2006-09-16; source msha-controller-operator-history
- **operator_operates_mine:** K & T Stone & Gravel LLC → K & T Stone and Gravel LLC; 2006-09-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Keith A  Indreland et al → K & T Stone and Gravel LLC; 2006-09-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith A  Indreland et al → K & T Stone & Gravel LLC; 2006-09-17 to current/open; source msha-controller-operator-history