# Relationship history for MSHA mine 1103094

Current hierarchy: **Dan  Stokes → STOKES SAND & GRAVEL → STOKES SAND& GRAVEL**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** North American Services Inc → STOKES SAND& GRAVEL; 2001-07-01 to 2005-03-28; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Castrogiovanni → STOKES SAND& GRAVEL; 2001-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Castrogiovanni → North American Services Inc; 2001-07-01 to 2005-03-28; source msha-controller-operator-history
- **operator_operates_mine:** STOKES SAND & GRAVEL → STOKES SAND& GRAVEL; 2005-03-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dan  Stokes → STOKES SAND& GRAVEL; 2005-03-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan  Stokes → STOKES SAND & GRAVEL; 2005-03-29 to current/open; source msha-controller-operator-history