# Relationship history for MSHA mine 3102115

Current hierarchy: **Neal  Cunningham → Cunningham Brick Co Inc → Davidson Mine II**

- 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:** Neal  Cunningham  et al → Davidson Mine II; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cunningham Brick Co Inc → Davidson Mine II; 1997-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Neal  Cunningham  et al → Cunningham Brick Co Inc; 1997-06-01 to current/open; source msha-controller-operator-history