# Relationship history for MSHA mine 1103243

Current hierarchy: **Louis A  Timp → Louie's Aggregate → Portable Rip Rap Plant**

- 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:** Louis A  Timp → Portable Rip Rap Plant; 2004-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Louie's Aggregate → Portable Rip Rap Plant; 2011-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Louis A  Timp → Louie's Aggregate; 2011-11-01 to current/open; source msha-controller-operator-history