David L. Green wrote:

  I'll be moving hive in the summer too and have not heard
  anyone talk about heat exhaustion yet.

 A beekeeper died at a commercial operation in the south a few years
back from heat exhaustion.  A very real risk if you are not careful.
  I have got overheated  myself and like Dave said didn't feel like I
could drive.  I was getting light headed and feeling like I was going to
pass out.  There was a small (muddy) pond by the bee yard. Yep! In I
went (without my bee suit).  Took about a half hour to get to a place I
felt like driving but I was OK but very muddy.  Another time I went into
a air conditioned area for awhile and was ok.
In 1978 I bought out Bruce Sunderland of Raytown,Missouri. I bought the
outfit from his wife because Bruce had went to work his bees and didn't
return home for supper.  When she drove into the bee yard she saw him
slumped against the front tire of his truck dead.  I never met Bruce but
wish I had as his operation was in excellent condition.  They said Bruce
had a heart attack but the temp was over 95F. the day he died.  Was the
same yard I went for a swim in the muddy little pond (depth 2-3 feet)
and about the same time of year. The day I overheated the temperature
had been over 100F. for eleven days in a row. Like weather extremes come
to Missouri.
News flash.  We will have a white Christmas in Missouri this year.
Maybe a white New Years and even a white Easter is we don't get a warm
up before long.  The bees have been in cluster for two months with only
a couple days of about a hour of flying.

    Because of the heat here in South Carolina, I sometimes do get sick
and  for this reason do not have string or zipper veils. My wife makes
my veils of > black tulle, and uses a strip of elastic to keep them
closed at the neck.
> This means they can come off quickly when needed. (Throwing up thru a veil is NOT fun!)  They also cost only a couple bucks each.

Not as inexpensive as Daves veil but the * bug baffler* available from
Mid-Con Agrimarketing 1-800-547-1392  www.mid-conagri.com works better
than a regular bee suit in hot weather. They are on page 6 of their 99
catalog. Prices range from $27 to $ 35 U.S.. They are comfortable,roomy
one piece headnet-shirt which gives upper body and head protection.
There is a covenient full length zipper in the front neck seam for easy
access to your face. Elastic band at the hip and wrists. They work and
maybe other Bee-L members will comment on their experiences with the
*Bug Baffler*.
Sincerely,
Bob Harrison
Odessa,Missouri