# Relationship history for MSHA mine 2402569

Current hierarchy: **Kurt  Croell → Croell, Inc. → Croell Portable #1**

- 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

- **controller_controls_mine:** Roger  Croell → Croell Portable #1; 1950-01-01 to 2013-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Johnson Lane Materials → Croell Portable #1; 2010-04-19 to 2017-02-23; source msha-controller-operator-history
- **controller_controls_mine:** Scott  Chester et al → Croell Portable #1; 2010-04-19 to 2016-07-06; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Chester et al → Johnson Lane Materials; 2010-04-19 to 2016-07-06; source msha-controller-operator-history
- **controller_controls_operator:** Kevin  McGovern et al → Johnson Lane Materials; 2010-04-19 to 2016-07-06; source msha-controller-operator-history
- **controller_controls_mine:** Kurt  Croell → Croell Portable #1; 2014-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kevin  McGovern → Croell Portable #1; 2016-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin  McGovern → Johnson Lane Materials; 2016-07-07 to 2017-02-23; source msha-controller-operator-history
- **operator_operates_mine:** FirstMark Materials, LLC → Croell Portable #1; 2017-02-24 to 2021-11-11; source msha-controller-operator-history
- **controller_controls_mine:** Mitchell  Goldsteen → Croell Portable #1; 2017-02-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mitchell  Goldsteen → FirstMark Materials, LLC; 2017-02-24 to 2021-11-11; source msha-controller-operator-history
- **operator_operates_mine:** Croell, Inc. → Croell Portable #1; 2021-11-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kurt  Croell → Croell, Inc.; 2021-11-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roger  Croell → Croell, Inc.; 2021-11-12 to 2013-12-31; source msha-controller-operator-history