# Relationship history for MSHA mine 4102955

Current hierarchy: **Carter Orvil → Orvil Carter Dirt Contractor Inc → Ed Meek Pit**

- 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:** Orvil Carter Dirt Contractor Inc → Ed Meek Pit; 1979-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Carter Orvil → Ed Meek Pit; 1979-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carter Orvil → Orvil Carter Dirt Contractor Inc; 1979-12-01 to current/open; source msha-controller-operator-history