# Relationship history for MSHA mine 4603869

Current hierarchy: **Mc Clung Harold C → Jenny Mining Company → #49 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:** I C M Carbomin International Corp → #49 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Leckie Smokeless Coal Company → #49 Mine; 1973-01-01 to 1979-11-28; source msha-controller-operator-history
- **controller_controls_operator:** I C M Carbomin International Corp → Leckie Smokeless Coal Company; 1973-01-01 to 1979-11-28; source msha-controller-operator-history
- **operator_operates_mine:** Jenny Mining Company → #49 Mine; 1979-11-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mc Clung Harold C → #49 Mine; 1979-11-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Clung Harold C → Jenny Mining Company; 1979-11-29 to current/open; source msha-controller-operator-history