# Relationship history for MSHA mine 5001786

Current hierarchy: **John W  Light; Gale J  Light → Western Construction & Equipment, LLC → Cedar Rapids 30x54 Jaw Crusher**

- 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:** Alaska Interstate Construction, LLC. → Cedar Rapids 30x54 Jaw Crusher; 2004-07-16 to 2016-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Cook Inlet Regional Inc  et al → Cedar Rapids 30x54 Jaw Crusher; 2004-07-16 to 2014-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Cook Inlet Regional Inc  et al → Alaska Interstate Construction, LLC.; 2004-07-16 to 2014-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Nabors Industries Inc  et al → Alaska Interstate Construction, LLC.; 2004-07-16 to 2014-12-31; source msha-controller-operator-history
- **controller_controls_mine:** David C  Cruz → Cedar Rapids 30x54 Jaw Crusher; 2015-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David C  Cruz → Alaska Interstate Construction, LLC.; 2015-01-01 to 2016-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Western Construction & Equipment, LLC → Cedar Rapids 30x54 Jaw Crusher; 2016-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gale J  Light et al → Cedar Rapids 30x54 Jaw Crusher; 2016-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gale J  Light et al → Western Construction & Equipment, LLC; 2016-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John W  Light et al → Western Construction & Equipment, LLC; 2016-04-01 to current/open; source msha-controller-operator-history