# Relationship history for MSHA mine 1002278

Current hierarchy: **Michael  Taylor; Phil Justin  King → Idaho Grading and Trucking, L.L.C. → IGT Sand and 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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Pleasant Valley Gravel → IGT Sand and Gravel; 2016-08-30 to 2022-10-06; source msha-controller-operator-history
- **controller_controls_mine:** Michael T Nuxoll → IGT Sand and Gravel; 2016-08-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael T Nuxoll → Pleasant Valley Gravel; 2016-08-30 to 2022-10-06; source msha-controller-operator-history
- **operator_operates_mine:** Idaho Grading and Trucking, L.L.C. → IGT Sand and Gravel; 2022-10-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael J Taylor et al → IGT Sand and Gravel; 2022-10-07 to 2024-09-23; source msha-controller-operator-history
- **controller_controls_operator:** Michael J Taylor et al → Idaho Grading and Trucking, L.L.C.; 2022-10-07 to 2024-09-23; source msha-controller-operator-history
- **controller_controls_operator:** Phil Justin  King et al → Idaho Grading and Trucking, L.L.C.; 2022-10-07 to 2024-09-23; source msha-controller-operator-history
- **controller_controls_operator:** Anthony R Bigbee et al → Idaho Grading and Trucking, L.L.C.; 2022-10-07 to 2024-09-23; source msha-controller-operator-history
- **controller_controls_mine:** Phil Justin  King et al → IGT Sand and Gravel; 2024-09-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phil Justin  King et al → Idaho Grading and Trucking, L.L.C.; 2024-09-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Taylor et al → Idaho Grading and Trucking, L.L.C.; 2024-09-24 to current/open; source msha-controller-operator-history