# Relationship history for MSHA mine 1202060

Current hierarchy: **Peabody Energy Corporation → United Minerals Company Llc → Deer Ridge**

- 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:** Greg  Olinger → Deer Ridge; 1979-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** United Minerals Inc → Deer Ridge; 1990-02-01 to 1994-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Olinger → United Minerals Inc; 1990-02-01 to 1994-05-31; source msha-controller-operator-history
- **operator_operates_mine:** United Minerals Company Llc → Deer Ridge; 1994-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy et al → Deer Ridge; 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 → Deer Ridge; 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