Cesar, When I started beekeeping in 1980, I bought over a beekeeping concern, which entailed buying the hives, extractor, safety equipment etc. Out of the twenty hives a few were concrete. The bees were never successful in these hives, absconding regularly. I also found them heavy to move about, particularly the supers. I also found they broke easily when vandals entered, and they could not be repaired either. The advantages I found were that they were the only hives left in my one apiary after a fire had swept through. Also after the bees absconded, although the frames were mutilated by wax moth there was no damage done to the hive body. Eddy Lear South Africa -----Original Message----- From: [log in to unmask] [mailto:[log in to unmask]] Sent: 07 June 2000 04:32 To: [log in to unmask] Subject: Re: cement hives Of course there may be some advantages, but for disadvantages would'nt cement (concrete) hives be very poor insulators? Cesar Flores Colorado p.s. thanks for all the replies about comb in jars