# Relationship history for MSHA mine 2103061

Current hierarchy: **CRH PLC → Southern Minnesota Construction Company, Inc. → #408 Superior Wash Plant Hope**

- 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:** Larry V  Nurre → #408 Superior Wash Plant Hope; 1988-07-01 to 2006-03-01; source msha-controller-operator-history
- **controller_controls_mine:** Harold  Goebel → #408 Superior Wash Plant Hope; 1988-09-01 to 1994-05-03; source msha-controller-operator-history
- **operator_operates_mine:** H/D Goebel Inc → #408 Superior Wash Plant Hope; 1993-02-01 to 1994-05-03; source msha-controller-operator-history
- **controller_controls_operator:** Harold  Goebel → H/D Goebel Inc; 1993-02-01 to 1994-05-03; source msha-controller-operator-history
- **operator_operates_mine:** Nelson Farm Drainage Inc → #408 Superior Wash Plant Hope; 1994-05-04 to 1999-09-07; source msha-controller-operator-history
- **controller_controls_mine:** Gary  Nelson → #408 Superior Wash Plant Hope; 1994-05-04 to 1999-09-07; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Nelson → Nelson Farm Drainage Inc; 1994-05-04 to 1999-09-07; source msha-controller-operator-history
- **operator_operates_mine:** Southern Minnesota Construction Company, Inc. → #408 Superior Wash Plant Hope; 1999-09-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry V  Nurre → Southern Minnesota Construction Company, Inc.; 1999-09-08 to 2006-03-01; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → #408 Superior Wash Plant Hope; 2006-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Southern Minnesota Construction Company, Inc.; 2006-03-02 to current/open; source msha-controller-operator-history