# Relationship history for MSHA mine 1700879

Current hierarchy: **Jonathan E Shaw; Daniel H Shaw → Shaw Brothers Construction, Inc. → Lokotrack LT120**

- 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

- **controller_controls_mine:** Jonathan E Shaw et al → Lokotrack LT120; 1988-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Shaw Brothers Construction, Inc. → Lokotrack LT120; 2011-10-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jonathan E Shaw et al → Shaw Brothers Construction, Inc.; 2011-10-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel H Shaw Et Al → Shaw Brothers Construction, Inc.; 2011-10-11 to current/open; source msha-controller-operator-history