You could: Check with the Provincial Apiculturist John Gruszka (306) 953 2790 or get the publication from Alberta Agriculture: Darby, D. 1988 Overwintering buildings for bees. Engineering Branch, Alberta Agriculture, Lethbridge, Alberta or check the review of overwintering in The Hive and the Honeybee 1992, pages 852 to 868. Kerry Clark, Apiculture Specialist B.C. Ministry of Agriculture 1201 103 Ave Dawson Creek B.C. V1G 4J2 CANADA Tel (604) 784-2225 fax (604) 784-2299 INTERNET [log in to unmask]