I had 4 hives on a local farm where the farmer called to complain that his workers were being stung. It would appear this problem began just before I pulled supers off the hives, and continued after the wet extracted supers were replaced. I pulled the supers on a Wednesday, which was the first day I heard the complaint. I replaced the wet supers that evening, but the behavior continued. Approaching the bee yard I would get a group of at least a half dozen bees attempting to sting my bee suit, or buzzing about the veil. These bees would continue attacking as I retreated. The farm workers were stung much farther from the hives, about fifty yards or so. No signs of skunk, opossum, or raccoon damage. No animal scat, bee carcasses, or other evidence of critters. Of the 4 hives only one had significant group of bees standing on the bottom board entrance. When I put a gloved hand into the entrance of each hive, only this same hive showed an agressive response. Opening the hive covers elicited no differential response from any of the hives - bees did not "boil out". Early in the morning I moved this one suspect hive to a more remote bee yard. At noon later that day I returned to the original yard, where the remaining 3 hives are busy working pumpkins, I believe (lots of in and out activity, few guards). I was not challenged or approached by any bees, indicating that to my relief I had moved the right hive ( I did not need a veil). I expect to obtain a queen and requeen the hive as soon as I can. The hive is full of bees, who quickly boiled out after I unsealed the entrance after moving it. Any tips on requeening under these circumstances? /C.Crowell Hightstown, New Jersey