# Relationship history for MSHA mine 2602700

Current hierarchy: **Tyler Blaine  Mason; Kevin  Hutchings → High Desert Aggregrates, LLC → High Desert Aggregates**

- 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:** High Desert Aggregrates, LLC → High Desert Aggregates; 2011-07-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kevin  Hutchings et al → High Desert Aggregates; 2011-07-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin  Hutchings et al → High Desert Aggregrates, LLC; 2011-07-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tyler Blaine  Mason et al → High Desert Aggregrates, LLC; 2011-07-06 to current/open; source msha-controller-operator-history