# Relationship history for MSHA mine 1513448

Current hierarchy: **Infinity Coal Corp → Hickory Hill Development Corp → Dry Fork 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:** Hurley Danny R → Dry Fork Mine; 1981-08-01 to 1984-07-08; source msha-controller-operator-history
- **operator_operates_mine:** Jubilee Coal Corp → Dry Fork Mine; 1982-04-01 to 1984-07-08; source msha-controller-operator-history
- **controller_controls_operator:** Hurley Danny R → Jubilee Coal Corp; 1982-04-01 to 1984-07-08; source msha-controller-operator-history
- **controller_controls_mine:** Owens Paul B → Dry Fork Mine; 1982-06-17 to 1989-03-07; source msha-controller-operator-history
- **operator_operates_mine:** Mokie Coal Inc → Dry Fork Mine; 1984-07-09 to 1989-03-07; source msha-controller-operator-history
- **controller_controls_operator:** Owens Paul B → Mokie Coal Inc; 1984-07-09 to 1989-03-07; source msha-controller-operator-history
- **operator_operates_mine:** Hickory Hill Development Corp → Dry Fork Mine; 1989-03-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Infinity Coal Corp → Dry Fork Mine; 1989-03-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Infinity Coal Corp → Hickory Hill Development Corp; 1989-03-08 to current/open; source msha-controller-operator-history