# Relationship history for MSHA mine 3003303

Current hierarchy: **Anthony L  Grande II → Troy Topsoil Co. Inc. → Eagle Crusher Impactor #30097**

- 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:** Anthony L  Grande II → Eagle Crusher Impactor #30097; 1990-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Troy Topsoil Co. Inc. → Eagle Crusher Impactor #30097; 1999-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony L  Grande II → Troy Topsoil Co. Inc.; 1999-10-01 to current/open; source msha-controller-operator-history