# Relationship history for MSHA mine 1201982

Current hierarchy: **Peabody Energy Corporation → United Minerals Company Llc → Dinken Creek**

- 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:** Sexton William (Wally) W Jr → Dinken Creek; 1980-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Regional Mining Corp → Dinken Creek; 1986-06-01 to 1987-07-07; source msha-controller-operator-history
- **controller_controls_mine:** Duvall L W → Dinken Creek; 1986-06-01 to 1987-07-07; source msha-controller-operator-history
- **controller_controls_operator:** Duvall L W → Regional Mining Corp; 1986-06-01 to 1987-07-07; source msha-controller-operator-history
- **operator_operates_mine:** Delta Mining Corp → Dinken Creek; 1987-07-08 to 1988-06-02; source msha-controller-operator-history
- **controller_controls_mine:** Smith Fred Jr → Dinken Creek; 1987-07-08 to 1988-06-02; source msha-controller-operator-history
- **controller_controls_operator:** Smith Fred Jr → Delta Mining Corp; 1987-07-08 to 1988-06-02; source msha-controller-operator-history
- **operator_operates_mine:** Marigold Mining Inc → Dinken Creek; 1988-06-03 to 1989-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Sexton William (Wally) W Jr → Marigold Mining Inc; 1988-06-03 to 1989-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Marigold Mining Inc → Dinken Creek; 1989-10-01 to 1994-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Greg  Olinger → Dinken Creek; 1989-10-01 to 1994-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Olinger → Marigold Mining Inc; 1989-10-01 to 1994-05-31; source msha-controller-operator-history
- **operator_operates_mine:** United Minerals Company Llc → Dinken Creek; 1994-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy et al → Dinken Creek; 1994-06-01 to 2015-12-30; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy et al → United Minerals Company Llc; 1994-06-01 to 2015-12-30; source msha-controller-operator-history
- **controller_controls_operator:** United Minerals Inc et al → United Minerals Company Llc; 1994-06-01 to 2015-12-30; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy Corporation → Dinken Creek; 2015-12-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → United Minerals Company Llc; 2015-12-31 to current/open; source msha-controller-operator-history