# Relationship history for MSHA mine 2602667

Current hierarchy: **Security Paving Company, Inc → Portable Aggregate Producers LLC → PAP Portable #1**

- 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:** Portable Aggregate Producers LLC → PAP Portable #1; 2009-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Laura A  Lintz et al → PAP Portable #1; 2009-03-02 to 2018-04-22; source msha-controller-operator-history
- **controller_controls_operator:** Laura A  Lintz et al → Portable Aggregate Producers LLC; 2009-03-02 to 2018-04-22; source msha-controller-operator-history
- **controller_controls_operator:** Sandy  Robles et al → Portable Aggregate Producers LLC; 2009-03-02 to 2018-04-22; source msha-controller-operator-history
- **controller_controls_mine:** Security Paving Company, Inc → PAP Portable #1; 2018-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Security Paving Company, Inc → Portable Aggregate Producers LLC; 2018-04-23 to current/open; source msha-controller-operator-history