# Relationship history for MSHA mine 0405910

Current hierarchy: **Antonio  Paredes → Rock Structures Construction → # 3 Portable**

- 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:** Antonio  Paredes → # 3 Portable; 1997-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rock Structures Construction → # 3 Portable; 2016-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Antonio  Paredes → Rock Structures Construction; 2016-03-02 to current/open; source msha-controller-operator-history