# Relationship history for MSHA mine 4605869

Current hierarchy: **General Paving Company → Ed-E Development Company Inc → Ed-E #4 Solo Tract**

- 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:** General Paving Company → Ed-E #4 Solo Tract; 1974-12-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ed-E Development Company Inc → Ed-E #4 Solo Tract; 1978-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** General Paving Company → Ed-E Development Company Inc; 1978-09-01 to current/open; source msha-controller-operator-history