One of the most important types of commercial cold storage in Minnesota is pharmaceutical grade cold storage. This type of cold storage facility is equipped to store blood, vaccines, and temperature sensitive biopharmaceuticals. The reason pharmaceutical grade cold storage is so valuable in Minnesota has to do with the Mayo Clinic, which is located in Rochester. Around 97,000 patients are treated at the Mayo Clinic every year, and many of them desperately need the medicines and treatments that are preserved in such commercial cold storage facilities.