# Relationship history for MSHA mine 1302373

Current hierarchy: **John P  Moyna → C J MOYNA & SONS LLC → PORTABLE GRIZZLY #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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** John P  Moyna → PORTABLE GRIZZLY #2; 2003-02-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C J MOYNA & SONS LLC → PORTABLE GRIZZLY #2; 2008-07-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John P  Moyna → C J MOYNA & SONS LLC; 2008-07-29 to current/open; source msha-controller-operator-history