# Relationship history for MSHA mine 1103198

Current hierarchy: **Randy  Tomaseski → Universal Asphalt & Excavating, Inc. → Universal Asphalt & Exc., Inc. Ladd Pit**

- 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:** U C Paving, Inc. → Universal Asphalt & Exc., Inc. Ladd Pit; 2008-06-25 to 2011-03-24; source msha-controller-operator-history
- **controller_controls_mine:** Corinne  Tomaseski → Universal Asphalt & Exc., Inc. Ladd Pit; 2008-06-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Corinne  Tomaseski → U C Paving, Inc.; 2008-06-25 to 2011-03-24; source msha-controller-operator-history
- **operator_operates_mine:** Universal Asphalt & Excavating, Inc. → Universal Asphalt & Exc., Inc. Ladd Pit; 2011-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Randy  Tomaseski → Universal Asphalt & Exc., Inc. Ladd Pit; 2011-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Tomaseski → Universal Asphalt & Excavating, Inc.; 2011-03-25 to current/open; source msha-controller-operator-history