# Relationship history for MSHA mine 4607792

Current hierarchy: **Albert F  Robinson → Lappitt Inc → Stark 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:** Albert F  Robinson → Stark Mine; 1989-01-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Fossil Energies Mining Corp → Stark Mine; 1989-10-01 to 1992-09-17; source msha-controller-operator-history
- **controller_controls_mine:** Williams W R P E → Stark Mine; 1989-10-01 to 1992-09-17; source msha-controller-operator-history
- **controller_controls_operator:** Williams W R P E → Fossil Energies Mining Corp; 1989-10-01 to 1992-09-17; source msha-controller-operator-history
- **operator_operates_mine:** West Milford Mining Company J V → Stark Mine; 1992-09-18 to 1993-05-25; source msha-controller-operator-history
- **controller_controls_mine:** Ambrec Corp & Kmx Inc → Stark Mine; 1992-09-18 to 1993-05-25; source msha-controller-operator-history
- **controller_controls_operator:** Ambrec Corp & Kmx Inc → West Milford Mining Company J V; 1992-09-18 to 1993-05-25; source msha-controller-operator-history
- **operator_operates_mine:** Lappitt Inc → Stark Mine; 1993-05-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Albert F  Robinson → Lappitt Inc; 1993-05-26 to current/open; source msha-controller-operator-history