# Relationship history for MSHA mine 0504250

Current hierarchy: **Randy  Snare; Levi  Snare; Justin  Snare; Dillon  Snare → Snare Construction Inc → Snare Construction Inc and Materials**

- 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:** Snare Construction Inc → Snare Construction Inc and Materials; 1987-08-01 to 2024-03-05; source msha-controller-operator-history
- **controller_controls_mine:** Ernest  Snare → Snare Construction Inc and Materials; 1987-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ernest  Snare → Snare Construction Inc; 1987-08-01 to 2024-03-05; source msha-controller-operator-history
- **operator_operates_mine:** Snare Construction Inc → Snare Construction Inc and Materials; 2024-03-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Randy  Snare et al → Snare Construction Inc and Materials; 2024-03-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Snare et al → Snare Construction Inc; 2024-03-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Levi  Snare et al → Snare Construction Inc; 2024-03-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dillon  Snare et al → Snare Construction Inc; 2024-03-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Justin  Snare et al → Snare Construction Inc; 2024-03-06 to current/open; source msha-controller-operator-history