# Relationship history for MSHA mine 4403669

Current hierarchy: **Cline Gordon & Gordie → Jo Flo 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

- **controller_controls_mine:** Ratliff Ira-Bill Et Al → No 1 Mine; 1973-06-01 to 1983-02-21; source msha-controller-operator-history
- **operator_operates_mine:** Ratliff Brothers Coal Company Inc → No 1 Mine; 1974-01-01 to 1976-08-26; source msha-controller-operator-history
- **controller_controls_operator:** Ratliff Ira-Bill Et Al → Ratliff Brothers Coal Company Inc; 1974-01-01 to 1976-08-26; source msha-controller-operator-history
- **operator_operates_mine:** Jo Flo Coal Company Inc → No 1 Mine; 1976-08-27 to 1979-05-09; source msha-controller-operator-history
- **controller_controls_mine:** Powers Harold T → No 1 Mine; 1976-08-27 to 1979-05-09; source msha-controller-operator-history
- **controller_controls_operator:** Powers Harold T → Jo Flo Coal Company Inc; 1976-08-27 to 1979-05-09; source msha-controller-operator-history
- **operator_operates_mine:** Jo Flo Coal Company Inc → No 1 Mine; 1979-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cline Gordon & Gordie → No 1 Mine; 1979-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cline Gordon & Gordie → Jo Flo Coal Company Inc; 1979-05-10 to current/open; source msha-controller-operator-history