# Relationship history for MSHA mine 4202382

Current hierarchy: **The Shaw Group → Shaw Environmental → Lime Peak Quarry**

- 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

- **operator_operates_mine:** Flare Construction Inc → Lime Peak Quarry; 2004-04-05 to 2006-02-01; source msha-controller-operator-history
- **controller_controls_mine:** Chris A  Boyer → Lime Peak Quarry; 2004-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chris A  Boyer → Flare Construction Inc; 2004-04-05 to 2006-02-01; source msha-controller-operator-history
- **operator_operates_mine:** Shaw Environmental → Lime Peak Quarry; 2006-02-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** The Shaw Group → Lime Peak Quarry; 2006-02-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** The Shaw Group → Shaw Environmental; 2006-02-02 to current/open; source msha-controller-operator-history