# Relationship history for MSHA mine 2900250

Current hierarchy: **Dicalite Management Holdings, LLC → Dicaperl Minerals LLC → EL GRANDE**

- 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:** Dicaperl Minerals LLC → EL GRANDE; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dicalite Management Group LLC → EL GRANDE; 1950-01-01 to 2019-02-20; source msha-controller-operator-history
- **controller_controls_operator:** Dicalite Management Group LLC → Dicaperl Minerals LLC; 1950-01-01 to 2019-02-20; source msha-controller-operator-history
- **controller_controls_mine:** Dicalite Management Holdings, LLC → EL GRANDE; 2019-02-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dicalite Management Holdings, LLC → Dicaperl Minerals LLC; 2019-02-21 to current/open; source msha-controller-operator-history