# Relationship history for MSHA mine 1401531

Current hierarchy: **Kurt  Croell → Croell, Inc. → Gate 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Joel D  Whitfield et al → Gate Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Roger  Croell → Gate Pit; 1950-01-01 to 2013-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Whitfield Sand & Concrete Inc → Gate Pit; 1989-09-01 to 2002-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Joel D  Whitfield et al → Whitfield Sand & Concrete Inc; 1989-09-01 to 2002-04-30; source msha-controller-operator-history
- **controller_controls_mine:** James A  Coffin → Gate Pit; 1998-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** KLAVER CONSTRUCTION PRODUCTS, LLC → Gate Pit; 2002-05-01 to 2004-03-28; source msha-controller-operator-history
- **controller_controls_mine:** Klaver Construction Company Incorporated → Gate Pit; 2002-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Klaver Construction Company Incorporated → KLAVER CONSTRUCTION PRODUCTS, LLC; 2002-05-01 to 2004-03-28; source msha-controller-operator-history
- **operator_operates_mine:** Dodge City Sand Co Inc → Gate Pit; 2004-03-29 to 2020-08-08; source msha-controller-operator-history
- **controller_controls_operator:** James A  Coffin → Dodge City Sand Co Inc; 2004-03-29 to 2020-08-08; source msha-controller-operator-history
- **controller_controls_mine:** Kurt  Croell → Gate Pit; 2014-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Croell, Inc. → Gate Pit; 2020-08-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kurt  Croell → Croell, Inc.; 2020-08-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roger  Croell → Croell, Inc.; 2020-08-09 to 2013-12-31; source msha-controller-operator-history