# Relationship history for MSHA mine 5100291

Current hierarchy: **Joaquin J  Silva; Georgette  Silva → Pineridge Farms, Inc. → Portable 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:** Georgette  Silva et al → Portable 2; 2007-01-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pineridge Farms, Inc. → Portable 2; 2008-02-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Georgette  Silva et al → Pineridge Farms, Inc.; 2008-02-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joaquin J  Silva et al → Pineridge Farms, Inc.; 2008-02-29 to current/open; source msha-controller-operator-history