# Relationship history for MSHA mine 0405862

Current hierarchy: **Carl  Shaefer; Dale  Shaefer → Pioneer Lucky Strike Mining Company LLC → Pioneer Lucky Strike Mining Company LLC**

- 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:** Pioneer Lucky Strike Mining Company LLC → Pioneer Lucky Strike Mining Company LLC; 2013-01-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Carl  Shaefer et al → Pioneer Lucky Strike Mining Company LLC; 2013-01-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carl  Shaefer et al → Pioneer Lucky Strike Mining Company LLC; 2013-01-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dale  Shaefer et al → Pioneer Lucky Strike Mining Company LLC; 2013-01-24 to current/open; source msha-controller-operator-history