# Relationship history for MSHA mine 4606656

Current hierarchy: **Mullins Jack → J & J Land Company → 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:** Saratoga Development Corp → No 1 Mine; 1983-05-01 to 1983-11-21; source msha-controller-operator-history
- **controller_controls_mine:** Goldsberry Earl B → No 1 Mine; 1983-05-01 to 1983-11-21; source msha-controller-operator-history
- **controller_controls_operator:** Goldsberry Earl B → Saratoga Development Corp; 1983-05-01 to 1983-11-21; source msha-controller-operator-history
- **operator_operates_mine:** J & J Land Company → No 1 Mine; 1983-11-22 to 1987-02-14; source msha-controller-operator-history
- **controller_controls_mine:** Mullins Jack → No 1 Mine; 1983-11-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Jack → J & J Land Company; 1983-11-22 to 1987-02-14; source msha-controller-operator-history
- **operator_operates_mine:** Caisson Coal Corp → No 1 Mine; 1987-02-15 to 1987-09-08; source msha-controller-operator-history
- **controller_controls_mine:** Workman Benjamin Et Al → No 1 Mine; 1987-02-15 to 1987-09-08; source msha-controller-operator-history
- **controller_controls_operator:** Workman Benjamin Et Al → Caisson Coal Corp; 1987-02-15 to 1987-09-08; source msha-controller-operator-history
- **operator_operates_mine:** J & J Land Company → No 1 Mine; 1987-09-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Jack → J & J Land Company; 1987-09-09 to current/open; source msha-controller-operator-history