# Relationship history for MSHA mine 1900301

Current hierarchy: **Thomas  McIntyre → Mc Intyre Trucking Inc → Mc Intyre Sutton Plant**

- 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:** Direnzo Brothers Sand & Gravel Inc → Mc Intyre Sutton Plant; 1950-01-01 to 1988-12-11; source msha-controller-operator-history
- **controller_controls_mine:** Direnzo John → Mc Intyre Sutton Plant; 1950-01-01 to 1988-12-11; source msha-controller-operator-history
- **controller_controls_operator:** Direnzo John → Direnzo Brothers Sand & Gravel Inc; 1950-01-01 to 1988-12-11; source msha-controller-operator-history
- **controller_controls_mine:** Egerton Inc → Mc Intyre Sutton Plant; 1988-09-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Emaral Corp → Mc Intyre Sutton Plant; 1988-12-12 to 1989-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Egerton Inc → Emaral Corp; 1988-12-12 to 1989-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Mc Intyre Trucking Inc → Mc Intyre Sutton Plant; 1989-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas  McIntyre → Mc Intyre Sutton Plant; 1989-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas  McIntyre → Mc Intyre Trucking Inc; 1989-09-01 to current/open; source msha-controller-operator-history