# Relationship history for MSHA mine 2500664

Current hierarchy: **Kurt  Croell → Croell, Inc. → North Platte #1 (WECO Pit)**

- 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:** Western Engineering Company Inc → North Platte #1 (WECO Pit); 1950-01-01 to 1990-08-14; source msha-controller-operator-history
- **controller_controls_mine:** G A  Finley → North Platte #1 (WECO Pit); 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** G A  Finley → Western Engineering Company Inc; 1950-01-01 to 1990-08-14; source msha-controller-operator-history
- **controller_controls_mine:** Roger  Croell → North Platte #1 (WECO Pit); 1950-01-01 to 2013-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Western Materials Inc. → North Platte #1 (WECO Pit); 1990-08-15 to 2020-02-04; source msha-controller-operator-history
- **controller_controls_mine:** Bill  Lemons et al → North Platte #1 (WECO Pit); 1990-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bill  Lemons et al → Western Materials Inc.; 1990-08-15 to 2020-02-04; source msha-controller-operator-history
- **controller_controls_mine:** Kurt  Croell → North Platte #1 (WECO Pit); 2014-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Croell, Inc. → North Platte #1 (WECO Pit); 2020-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kurt  Croell → Croell, Inc.; 2020-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roger  Croell → Croell, Inc.; 2020-02-05 to 2013-12-31; source msha-controller-operator-history