# Relationship history for MSHA mine 4201126

Current hierarchy: **(Donald) Todd  Kiscaden; Scott  Kiscaden → White Oak Mining & Construction Company Inc → White Oak Mine #3**

- 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:** Valley Camp Of Utah Inc → White Oak Mine #3; 1974-10-01 to 1995-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Quaker State Corp → White Oak Mine #3; 1974-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Quaker State Corp → Valley Camp Of Utah Inc; 1974-10-01 to 1995-05-31; source msha-controller-operator-history
- **controller_controls_mine:** (Donald) Todd  Kiscaden et al → White Oak Mine #3; 1993-09-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** White Oak Mining & Construction Company Inc → White Oak Mine #3; 1995-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** (Donald) Todd  Kiscaden et al → White Oak Mining & Construction Company Inc; 1995-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Kiscaden et al → White Oak Mining & Construction Company Inc; 1995-06-01 to current/open; source msha-controller-operator-history