# Relationship history for MSHA mine 4104882

Current hierarchy: **Frank  Garza → Garza Masonry Stone, Inc. → 4104882 / San Saba**

- 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:** Frank  Garza → 4104882 / San Saba; 1995-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** JVA Stone and Landscaping → 4104882 / San Saba; 2011-05-09 to 2012-10-09; source msha-controller-operator-history
- **controller_controls_mine:** Florencio  Guerrero → 4104882 / San Saba; 2011-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Florencio  Guerrero → JVA Stone and Landscaping; 2011-05-09 to 2012-10-09; source msha-controller-operator-history
- **operator_operates_mine:** Garza Masonry Stone, Inc. → 4104882 / San Saba; 2012-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frank  Garza → Garza Masonry Stone, Inc.; 2012-10-10 to current/open; source msha-controller-operator-history