# Relationship history for MSHA mine 5100308

Current hierarchy: **Lawrence  Kiley → REK ASSOCIATES → REK-PP2**

- 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:** REK ASSOCIATES → REK-PP2; 2012-02-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lawrence  Kiley et al → REK-PP2; 2012-02-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lawrence  Kiley et al → REK ASSOCIATES; 2012-02-17 to current/open; source msha-controller-operator-history