# Relationship history for MSHA mine 2902159

Current hierarchy: **Lasley Shane → Basin Aggregate → BASIN AGGREGATE (WATERFLOW PLT)**

- 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:** Dine Bi Ghan Tse → BASIN AGGREGATE (WATERFLOW PLT); 1996-06-01 to 1998-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Brown Romero → BASIN AGGREGATE (WATERFLOW PLT); 1996-06-01 to 1998-05-19; source msha-controller-operator-history
- **controller_controls_operator:** Brown Romero → Dine Bi Ghan Tse; 1996-06-01 to 1998-05-19; source msha-controller-operator-history
- **operator_operates_mine:** Basin Aggregate → BASIN AGGREGATE (WATERFLOW PLT); 1998-05-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lasley Shane → BASIN AGGREGATE (WATERFLOW PLT); 1998-05-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lasley Shane → Basin Aggregate; 1998-05-20 to current/open; source msha-controller-operator-history