# Relationship history for MSHA mine 4103110

Current hierarchy: **Randy  Hood → E E Hood & Sons Construction Co Inc → Mobel Crusher #2 Marek 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Randy  Hood → Mobel Crusher #2 Marek Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** E E Hood & Sons Construction Co Inc → Mobel Crusher #2 Marek Pit; 1981-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Hood → E E Hood & Sons Construction Co Inc; 1981-11-01 to current/open; source msha-controller-operator-history