# Relationship history for MSHA mine 4401769

Current hierarchy: **Perry Allen  Whited → Davis & Whited Coal Company Inc → No 1 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

- **operator_operates_mine:** Hurt & Nichols Coal Co → No 1 Mine; 1950-01-01 to 1972-12-01; source msha-controller-operator-history
- **controller_controls_mine:** Hurt & Nichols Coal Company → No 1 Mine; 1950-01-01 to 1972-12-01; source msha-controller-operator-history
- **controller_controls_operator:** Hurt & Nichols Coal Company → Hurt & Nichols Coal Co; 1950-01-01 to 1972-12-01; source msha-controller-operator-history
- **operator_operates_mine:** Ray Coal Co → No 1 Mine; 1972-12-02 to 1974-04-01; source msha-controller-operator-history
- **controller_controls_mine:** Ray Guy → No 1 Mine; 1972-12-02 to 1974-04-01; source msha-controller-operator-history
- **controller_controls_operator:** Ray Guy → Ray Coal Co; 1972-12-02 to 1974-04-01; source msha-controller-operator-history
- **operator_operates_mine:** Joyce Coal Co → No 1 Mine; 1974-04-02 to 1974-10-01; source msha-controller-operator-history
- **controller_controls_mine:** Joyce Estil → No 1 Mine; 1974-04-02 to 1974-10-01; source msha-controller-operator-history
- **controller_controls_operator:** Joyce Estil → Joyce Coal Co; 1974-04-02 to 1974-10-01; source msha-controller-operator-history
- **operator_operates_mine:** Davis & Whited Coal Company Inc → No 1 Mine; 1974-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Perry Allen  Whited → No 1 Mine; 1974-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Perry Allen  Whited → Davis & Whited Coal Company Inc; 1974-10-02 to current/open; source msha-controller-operator-history