# Relationship history for MSHA mine 2602752

Current hierarchy: **MKI Kelzyme Partners LLC; Coby Kelzyme Partners LLC → Kelzyme Mineral Development, LLC → KRD**

- 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:** Kelzyme Mineral Development, LLC → KRD; 2013-10-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** MKI Kelzyme Partners LLC et al → KRD; 2013-10-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** MKI Kelzyme Partners LLC et al → Kelzyme Mineral Development, LLC; 2013-10-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Coby Kelzyme Partners LLC et al → Kelzyme Mineral Development, LLC; 2013-10-28 to current/open; source msha-controller-operator-history