# Relationship history for MSHA mine 1301916

Current hierarchy: **Kurt  Croell → Croell, Inc. → Clarksville Wash Crew #2**

- 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

- **controller_controls_mine:** Roger  Croell → Clarksville Wash Crew #2; 1950-01-01 to 2013-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Knock'S Building Supplies → Clarksville Wash Crew #2; 1979-01-01 to 2002-04-23; source msha-controller-operator-history
- **controller_controls_mine:** Markley  Knock → Clarksville Wash Crew #2; 1979-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Markley  Knock → Knock'S Building Supplies; 1979-01-01 to 2002-04-23; source msha-controller-operator-history
- **operator_operates_mine:** Knock's Bldg. Supply, Inc. → Clarksville Wash Crew #2; 2002-04-24 to 2003-04-01; source msha-controller-operator-history
- **controller_controls_mine:** David  Knock et al → Clarksville Wash Crew #2; 2002-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Knock et al → Knock's Bldg. Supply, Inc.; 2002-04-24 to 2003-04-01; source msha-controller-operator-history
- **controller_controls_operator:** Russ  Knock et al → Knock's Bldg. Supply, Inc.; 2002-04-24 to 2003-04-01; source msha-controller-operator-history
- **operator_operates_mine:** Croell, Inc. → Clarksville Wash Crew #2; 2003-04-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roger  Croell → Croell, Inc.; 2003-04-02 to 2013-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Kurt  Croell → Clarksville Wash Crew #2; 2014-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kurt  Croell → Croell, Inc.; 2014-01-01 to current/open; source msha-controller-operator-history