# Relationship history for MSHA mine 3201073

Current hierarchy: **Kevin James  Miller → Kevin J Miller Construction → Mega Screen 1**

- 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:** Kevin J Miller Construction → Mega Screen 1; 2019-04-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kevin James  Miller → Mega Screen 1; 2019-04-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin James  Miller → Kevin J Miller Construction; 2019-04-25 to current/open; source msha-controller-operator-history