# Relationship history for MSHA mine 0600399

Current hierarchy: **Margaret  Forgione → DESIATO SAND & GRAVEL CORP → DESIATO PIT AND MILL**

- 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:** DeSiato Sand & Gravel Corp → DESIATO PIT AND MILL; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Philip  DeSiato → DESIATO PIT AND MILL; 1950-01-01 to 2022-06-29; source msha-controller-operator-history
- **controller_controls_operator:** Philip  DeSiato → DeSiato Sand & Gravel Corp; 1950-01-01 to 2022-06-29; source msha-controller-operator-history
- **controller_controls_mine:** Margaret  Forgione → DESIATO PIT AND MILL; 2022-06-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Margaret  Forgione → DeSiato Sand & Gravel Corp; 2022-06-30 to current/open; source msha-controller-operator-history