# Relationship history for MSHA mine 4703288

Current hierarchy: **Ronald J  Yager; Nicholas J  Yager → J & N Stone LLC → J & N Stone 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** J & N Stone LLC → J & N Stone LLC; 2001-08-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nicholas J  Yager et al → J & N Stone LLC; 2001-08-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nicholas J  Yager et al → J & N Stone LLC; 2001-08-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald J  Yager et al → J & N Stone LLC; 2001-08-30 to current/open; source msha-controller-operator-history