# Relationship history for MSHA mine 3608730

Current hierarchy: **Nolan  Perin; Scott  Perin → N A P A Development Corp Inc → CELL 11-12**

- 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

- **operator_operates_mine:** N A P A Development Corp Inc → CELL 11-12; 1998-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nolan  Perin et al → CELL 11-12; 1998-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nolan  Perin et al → N A P A Development Corp Inc; 1998-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Perin et al → N A P A Development Corp Inc; 1998-04-01 to current/open; source msha-controller-operator-history