# Relationship history for MSHA mine 1000774

Current hierarchy: **Kolodny Victor → Mobil Energy & Mining → Missouri 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:** Ben Harvey & Associates → Missouri Mine; 1950-01-01 to 1979-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Harvey Ben → Missouri Mine; 1950-01-01 to 1979-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Harvey Ben → Ben Harvey & Associates; 1950-01-01 to 1979-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Mobil Energy & Mining → Missouri Mine; 1980-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kolodny Victor → Missouri Mine; 1980-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kolodny Victor → Mobil Energy & Mining; 1980-01-01 to current/open; source msha-controller-operator-history