This chapter contains sections titled: Introduction Comminution Classification of Comminution Equipment Nipping (Compression) Machines Impact Machines Tumbling Mills Cutting Machines Attrition Machines Other Methods of Comminution Selection of Comminution Equipment for Planetary Sampling Review of Recent and Current Work on Comminution for Planetary Sampling Operational Platforms Appendages Sample Acquisition from Surface Platforms Sample Acquisition from Aerial Platforms Conclusion References