From: "Dave Cushman" <dave.cushman@lineone.net>
Date: Sat, 9 Jun 2001 10:28:14 +0100
To: <BiologicalBeekeeping@yahoogroups.com>
Subject: Re: opening size

Hi Clay

1000 square mm is all the bees require (10 mm x 100 mm)
That will allow more than 30 bees per second to leave the hive and without
any problems with the thirty bees per second that are returning.

Regards From:- Dave Cushman, G8MZY
Beekeeping and Bee Breeding, http://website.lineone.net/~dave.cushman