# Relationship history for MSHA mine 3003952

Current hierarchy: **Richard A  Way → Granite Mining LLC → Portable Plant #2**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Richard A  Way → Portable Plant #2; 2007-10-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Granite Mining LLC → Portable Plant #2; 2015-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard A  Way → Granite Mining LLC; 2015-06-04 to current/open; source msha-controller-operator-history