# Relationship history for MSHA mine 1519209

Current hierarchy: **Donald D  Hastie; Robert L  Hastie → Hastie Mining → Klondike II**

- 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:** Donald D  Hastie et al → Klondike II; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hastie Mining → Klondike II; 2010-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald D  Hastie et al → Hastie Mining; 2010-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert L  Hastie et al → Hastie Mining; 2010-10-01 to current/open; source msha-controller-operator-history