# Relationship history for MSHA mine 4801365

Current hierarchy: **Hill Theodore → Hills Scoria → Hills Scoria 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:** Deters Construction Company → Hills Scoria Pit; 1981-11-01 to 1986-09-23; source msha-controller-operator-history
- **controller_controls_mine:** Deter Donald → Hills Scoria Pit; 1981-11-01 to 1986-09-23; source msha-controller-operator-history
- **controller_controls_operator:** Deter Donald → Deters Construction Company; 1981-11-01 to 1986-09-23; source msha-controller-operator-history
- **operator_operates_mine:** Hills Scoria → Hills Scoria Pit; 1986-09-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hill Theodore → Hills Scoria Pit; 1986-09-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hill Theodore → Hills Scoria; 1986-09-24 to current/open; source msha-controller-operator-history