# Relationship history for MSHA mine 3401965

Current hierarchy: **H I G Capital LLC → Harrison Gypsum, LLC → ACG Materials-Freedom**

- 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:** Charles W  Harrison Jr → ACG Materials-Freedom; 1950-01-01 to 2014-07-14; source msha-controller-operator-history
- **operator_operates_mine:** Harrison Gypsum, LLC → ACG Materials-Freedom; 2005-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles W  Harrison Jr → Harrison Gypsum, LLC; 2005-07-13 to 2014-07-14; source msha-controller-operator-history
- **controller_controls_mine:** H I G Capital LLC → ACG Materials-Freedom; 2014-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** H I G Capital LLC → Harrison Gypsum, LLC; 2014-07-15 to current/open; source msha-controller-operator-history