Minn. R. 1550.2190
CHILL ROOM LOT NUMBERS
Articles of food entered for periods of less than 30 days in a chill room located in a cold storage warehouse, but which chill room is used exclusively for the storage of articles of food for less than 30 days, shall have affixed their respective lot numbers. A record for the respective lot numbers and the date when such articles of food were placed in said chill room shall be kept open at all times to the commissioner.