# Relationship history for MSHA mine 1002306

Current hierarchy: **Richard W  Cram; Karen L  Cram → Cram Quarry LLC → Cram Quarry 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Cram Quarry LLC → Cram Quarry LLC; 2018-10-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard W  Cram et al → Cram Quarry LLC; 2018-10-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard W  Cram et al → Cram Quarry LLC; 2018-10-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Karen L  Cram et al → Cram Quarry LLC; 2018-10-17 to current/open; source msha-controller-operator-history