# Relationship history for MSHA mine 3401019

Current hierarchy: **Dolese Brothers Company → The Quapaw Co. → Oilton Plant**

- 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

- **operator_operates_mine:** The Quapaw Co. → Oilton Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert L  Childress et al → Oilton Plant; 1950-01-01 to 2019-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Robert L  Childress et al → The Quapaw Co.; 1950-01-01 to 2019-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Donald B  Childress et al → The Quapaw Co.; 1950-01-01 to 2019-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Robert L  Childress et al → Oilton Plant; 2019-08-01 to 2020-06-25; source msha-controller-operator-history
- **controller_controls_operator:** Robert L  Childress et al → The Quapaw Co.; 2019-08-01 to 2020-06-25; source msha-controller-operator-history
- **controller_controls_operator:** Tommy  Kiser et al → The Quapaw Co.; 2019-08-01 to 2020-06-25; source msha-controller-operator-history
- **controller_controls_mine:** Dolese Brothers Company → Oilton Plant; 2020-06-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dolese Brothers Company → The Quapaw Co.; 2020-06-26 to current/open; source msha-controller-operator-history