# Relationship history for MSHA mine 3201006

Current hierarchy: **Josh  Miller → 24/7 Contracting Services LLC → Portable Crusher #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:** 24/7 Contracting Services LLC → Portable Crusher #1; 2013-04-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Josh  Miller → Portable Crusher #1; 2013-04-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Josh  Miller → 24/7 Contracting Services LLC; 2013-04-26 to current/open; source msha-controller-operator-history