# Relationship history for MSHA mine 4405426

Current hierarchy: **Roberts Kenes P Jr & Sr → Eastern Coal Company → No 8 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Street Ralph Et Al → No 8 Mine; 1974-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James C  Ball → No 8 Mine; 1975-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Roberts Kenes P Jr & Sr → No 8 Mine; 1980-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mole Coal Company Inc → No 8 Mine; 1980-04-01 to 1980-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Street Ralph Et Al → Mole Coal Company Inc; 1980-04-01 to 1980-07-09; source msha-controller-operator-history
- **operator_operates_mine:** K & V Coal Company Inc → No 8 Mine; 1980-07-10 to 1980-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Kyle Lawrence → No 8 Mine; 1980-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kyle Lawrence → K & V Coal Company Inc; 1980-07-10 to 1980-09-01; source msha-controller-operator-history
- **operator_operates_mine:** Peggy-O Coal Company Inc → No 8 Mine; 1980-09-02 to 1986-06-12; source msha-controller-operator-history
- **controller_controls_operator:** James C  Ball → Peggy-O Coal Company Inc; 1980-09-02 to 1986-06-12; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Coal Company → No 8 Mine; 1986-06-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roberts Kenes P Jr & Sr → Eastern Coal Company; 1986-06-13 to current/open; source msha-controller-operator-history