# Relationship history for MSHA mine 0405892

Current hierarchy: **Frank  Ehrig → Infinity Recycling & Materials, Inc. → Infinityrmi**

- 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:** Infinity Recycling & Materials, Inc. → Infinityrmi; 2014-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Frank  Ehrig → Infinityrmi; 2014-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frank  Ehrig → Infinity Recycling & Materials, Inc.; 2014-10-20 to current/open; source msha-controller-operator-history