# Relationship history for MSHA mine 0103129

Current hierarchy: **Michael T  Costello → M S & R Equipment Company Inc → Dilworth Mine**

- 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:** Otis R  Robison et al → Dilworth Mine; 1991-03-01 to 2017-08-31; source msha-controller-operator-history
- **controller_controls_mine:** James  McWane et al → Dilworth Mine; 1993-07-15 to 2021-02-07; source msha-controller-operator-history
- **operator_operates_mine:** Mc Wane Inc → Dilworth Mine; 1998-08-01 to 2001-07-01; source msha-controller-operator-history
- **controller_controls_operator:** James  McWane et al → Mc Wane Inc; 1998-08-01 to 2001-07-01; source msha-controller-operator-history
- **operator_operates_mine:** MS&R Equipment Company, Inc → Dilworth Mine; 2001-07-02 to 2003-01-03; source msha-controller-operator-history
- **controller_controls_operator:** Otis R  Robison et al → MS&R Equipment Company, Inc; 2001-07-02 to 2003-01-03; source msha-controller-operator-history
- **controller_controls_operator:** Kendall  Robison et al → MS&R Equipment Company, Inc; 2001-07-02 to 2003-01-03; source msha-controller-operator-history
- **operator_operates_mine:** Wasatch Mining, Inc. → Dilworth Mine; 2003-01-04 to 2004-03-15; source msha-controller-operator-history
- **controller_controls_mine:** Thomas C  Fredrick → Dilworth Mine; 2003-01-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas C  Fredrick → Wasatch Mining, Inc.; 2003-01-04 to 2004-03-15; source msha-controller-operator-history
- **operator_operates_mine:** M S & R Equipment Company Inc → Dilworth Mine; 2004-03-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kendall  Robison et al → M S & R Equipment Company Inc; 2004-03-16 to 2017-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Otis R  Robison et al → M S & R Equipment Company Inc; 2004-03-16 to 2017-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Freddy  Hunt et al → Dilworth Mine; 2017-09-01 to 2019-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Freddy  Hunt et al → MS&R Equipment Company, Inc; 2017-09-01 to 2003-01-03; source msha-controller-operator-history
- **controller_controls_operator:** Michael T  Costello et al → MS&R Equipment Company, Inc; 2017-09-01 to 2003-01-03; source msha-controller-operator-history
- **controller_controls_operator:** Michael T  Costello et al → M S & R Equipment Company Inc; 2017-09-01 to 2019-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Freddy  Hunt et al → M S & R Equipment Company Inc; 2017-09-01 to 2019-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Michael T  Costello → Dilworth Mine; 2019-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael T  Costello → MS&R Equipment Company, Inc; 2019-08-01 to 2003-01-03; source msha-controller-operator-history
- **controller_controls_operator:** Michael T  Costello → M S & R Equipment Company Inc; 2019-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William D  McWane et al → Dilworth Mine; 2021-02-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William D  McWane et al → Mc Wane Inc; 2021-02-08 to 2001-07-01; source msha-controller-operator-history
- **controller_controls_operator:** C Phillip  McWane et al → Mc Wane Inc; 2021-02-08 to 2001-07-01; source msha-controller-operator-history