# Relationship history for MSHA mine 3608955

Current hierarchy: **Colleen A  Parks; Bryan G  Parks → P & P Stone LLC → P & P STONE, LLC**

- 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:** P & P Stone Llc → P & P STONE, LLC; 2001-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Colleen A  Parks et al → P & P STONE, LLC; 2001-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Colleen A  Parks et al → P & P Stone Llc; 2001-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bryan G  Parks et al → P & P Stone Llc; 2001-04-01 to current/open; source msha-controller-operator-history