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From: "Trey" <girvine@be*.ne*>
To: <JDisler401@ao*.co*>, <girvine@be*.ne*>,
     ,
Subject: RE: Helmets for cave diving. What's the deal?
Date: Sun, 20 Jan 2002 08:10:13 -0500
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Jeff, I am sick of idiots. I am sick of the Brits with their nonsense. You
just make it worse by spewing out sheer idiocy. Ask Reinhard how he got his
sleeping bag into the sumps, you fucking moron, and stop wasting my time
with bullshit. I don't care what you think is necessary for caving. Helmets
are bullshit in diving, and there is very little reason to expect to need
one in a horizontal cave situation.

Let's look at some of the really stupid things you and the Brits have said .
The fact that you don't actually do any of this is funny because you come up
with the same crap they do and they claim to be big shots at it. They even
claim some "traverse record" which is a screaming joke since other than the
14+ thousand foot deep traverse that JJ and I did a few years ago, the
previous "record" was held by Bill Gavin and Lamar English since 1987.

Now, the bullshit. For one thing, if you put a light on a helmet, the only
way you can look at something is by turning your whole head to point at it.
You can not just move your eyes like you can when you are holding the light
by its goodman handle. There is no reason you can not climb or negotiate
with a goodman handle. I made one with a strap when I went dry caving last.
On the other hand, putting the light on your gear subjects it to getting
hit, to falling off, to pulling the stupid helmet off, to tangling the cord,
to making it impossible to negotiate any kind of problem while tied in to
the light on you head, etc. Never mind looking like a complete moron.

Putting backup lights there, like the Brits do, is beyond the pale stupid.
( Then those morons generally leave them turned on, adding to the
stupidity).

Cave diving is something I know a little more about than your or the
cumulative Island of Great Britain, and I am quite certain of that as it
gets proven to me by all of you every time you try to argue with me about
it. DIR is the best system for doing this. We do all kinds of diving with
it. The perversions and nonsense that the strokes come up with is not going
to cut it , can not be rationally explained or justified, is the root of
most accidents , and for them we have Rule Number One.

I don't care what kind of stupid things anyone else dopes, but don't expect
me to do anything but laugh and call it stupid. Brett Gilliam has been doing
extremely deep air dives for years , and so I guess by the logic of you and
the Brits, this must be ok since he is still alive. Right?

Jeff, don't bother trying to tell me about anything underwater. I think you
are a complete moron, and I don't want to hear it.
  -----Original Message-----
  From: JDisler401@ao*.co* [mailto:JDisler401@ao*.co*]
  Sent: Saturday, January 19, 2002 6:07 PM
  To: girvine@be*.ne*; scoff_cavedivinggroup@ho*.co*;
techdiver@aquanaut.com
  Subject: Re: Helmets for cave diving. What's the deal?


  In a message dated 01/19/2002 8:07:24 AM Central Standard Time,
girvine@be*.ne* writes:

  Look, idiot, there is no excuse for doing things the way these guys do it.
Helmet in

    the dry cave is one thing, the rest of what you are saying reflects that
fact that you don't do jack shit, and don't know.


  Hey, I was in a dry cave once, and there was water in there too.

  So how do you sump dive? If the dry cave is beyond a sump or several, how
do you get the helmet there?

  Reinhard explores sump/dry stuff that you can't even understand the
severity of, and

    he has no problem bringing g all the right gear and DIR at the same
time.


  Agreed the push in France was no small feat and is to be highly respected.
It took an equipment configuration which provided the best possible means to
explore Doux de Coly with its unique conditions.
  But I'm certain what he used there will not work in all places on the
planet.

     Perhaps you could forward this to him so he can elaborate on his sump
diving

    techniques.
  I'd like to know if he wears a helmet for his dry cave explorations, and
how he gets   it beyond the sump.
  I'd be very surprised if he makes use of a standard DIR rig (which I know
is the right

    configuraton for cave springs which can be accessed easily).


  N
    ow if he can get a set of doubles and full DIR gear to the sump, then
I'd say that is the best way to dive in that particular sump. That is also
what I would do under these circumstances.
    If he has to side mount then I'd be very surprised if he makes use of a
standard DIR harness and backplate, but I know some who like this method.


  For a period, I used the standard backplate and harness as a sidemount rig
but discontinued doing so about 12 years ago. Personally, I did not care for
the increase in profile, nor
    did I like the way the backplate interfered with my crawling and
climbing.

    I made a sidemount harness built for the specific purpose of sump diving
which enables me more freedom of movement both under and above the water.


  Hey, I'm not one of those guys keep on trying to tell us all why idiocy
and the "every man for himself",

    "fuck your buddies", Star Wars Bar Scene mentality is such a noble
thing.


  The fact is that no matter how well you try to articulate stupidity, it is
still stupidity.
  I totally agree.

  "Silt Happens" JD







      -----Original Message-----
      From: JDisler401@ao*.co* [mailto:JDisler401@ao*.co*]
      Sent: Friday, January 18, 2002 12:43 AM
      To: scoff_cavedivinggroup@ho*.co*; techdiver@aquanaut.com
      Subject: Re: Helmets for cave diving. What's the deal?


      Greetings scoff,

      Well said and true to reality are the words you have shared.

      I think the most basic philosophy of anyone who dry caves is to wear a
helmet.

      For the sake of argument, or to perhaps conclude this argument...
      Imagine a sump (small, large, within any stratum, etc..)  which
necessitates a dive for the dry caver to reach the airfilled cave beyond.

      The experienced dry caver (that is someone who actually dry caves)
will,
      A. Most likely choose to wear a helmet to reach the sump.

      B. Most likely wish to have a helmet to explore the airfilled sections
beyond the sump.

      Personally I would choose all of the above, but If I had to choose
between A or B, I would unquestionably select B for the simple reason, that
is the location where Murphy could make some very serious problems.

      So now that the use of proper headgear has been selected, the choice
of lighting becomes a second consideration.
      The light selected must have,

      A. The ability to become attach to the helmet which ultimately will
become one with the caver.(This due to the reasons you have outlined, hands
free lighting for the purpose of negotiating the airfilled cave passage,
etc.)

      B.Have extended burn times, because of the nature of this
activity,(aka sump diving).

      C.Desirable power to weight ratio and durability.

      D.Usable both in and out of the submerged sections of passage and
without the need for reconfiguration of gear. In other words, to go from dry
cave mode to dive mode and back with as little hassle as possible.

      So now the marriage of headgear and lighting has been made and
hopefully the suitability of same has been made somewhat clear.
      How would the helmet best be carried through the sump?  I'd suggest it
would be on the head of the explorer.

      The above method equates to less extraneous gear which simplifies the
logistics.

      Scoff, as you also have pointed out, it is possible to wear a helmet
mounted light without blinding team members.
      It is also possible, given adequate visibility, to shield the light to
search for a team members light or to signal same.

      I agree that the suitability of DIR has been well noted and I believe
that some conditions do support it's use better than others.

      Also, I am not suggesting this is the only way to dive in sumps, and
would like to hear from others who have successfully used DIR for actual
sump dives.
      What equipment configuration was used to explore the airfilled passage
beyond the sump? Anyone?

      Disclaimer, I do not claim to be an expert on any type of diving, but
I did stay in a Holiday Inn Express last night.

      "Silt Happens" JD






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<DIV><SPAN class=3D547595212-20012002><FONT face=3DArial
color=3D#0000ff =
size=3D2>Jeff,=20
I am sick of idiots. I am sick of the Brits with their nonsense. You =
just make=20
it worse by spewing out sheer idiocy. Ask Reinhard how he got his =
sleeping bag=20
into the sumps, you fucking moron, and stop wasting my time with =
bullshit. I=20
don't care what you think is necessary for caving. Helmets are bullshit =
in=20
diving, and there is very little reason to expect to need one in a =
horizontal=20
cave situation. <BR></FONT></SPAN></DIV>
<DIV><SPAN class=3D547595212-20012002><FONT face=3DArial
color=3D#0000ff =
size=3D2>Let's=20
look at some of the really stupid things you and the Brits have said . =
The fact=20
that you don't actually do any of this is funny because you come up with =
the=20
same crap they do and they claim to be big shots at it. They even claim =
some=20
"traverse record" which is a screaming joke since other than the 14+ =
thousand=20
foot deep traverse that JJ and I did a few years ago, the previous =
"record" was=20
held by Bill Gavin and Lamar English since 1987.</FONT></SPAN></DIV>
<DIV><SPAN class=3D547595212-20012002><FONT face=3DArial
color=3D#0000ff =

size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D547595212-20012002><FONT face=3DArial
color=3D#0000ff =
size=3D2>Now,=20
the bullshit. For one thing, if you put a light on a helmet, the only =
way you=20
can look at something is by turning your whole head to point at it. You =
can not=20
just move your eyes like you can when you are holding the light by its =
goodman=20
handle. There is no reason you can not climb or negotiate with a goodman =
handle.=20
I made one with a strap when I went dry caving last. On the other hand, =
putting=20
the light on your gear subjects it to getting hit, to falling off, to =
pulling=20
the stupid helmet off, to tangling the cord, to making it impossible to=20
negotiate any kind of problem while tied in to the light on you head, =
etc. Never=20
mind looking like a complete moron.</FONT></SPAN></DIV>
<DIV><SPAN class=3D547595212-20012002><FONT face=3DArial
color=3D#0000ff =

size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D547595212-20012002><FONT face=3DArial
color=3D#0000ff =

size=3D2>Putting backup lights there, like the Brits do, is beyond the =
pale=20
stupid. ( Then those morons generally leave them turned on, adding to =
the=20
stupidity).</FONT></SPAN></DIV>
<DIV><SPAN class=3D547595212-20012002><FONT face=3DArial
color=3D#0000ff =

size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D547595212-20012002><FONT face=3DArial
color=3D#0000ff =
size=3D2>Cave=20
diving is something I know a little more about than your or the =
cumulative=20
Island of Great Britain, and I am quite certain of that as =
it gets=20
proven to me by all of you every time you try to argue with me about=20
it. DIR is the best system for doing this. We do all kinds of =
diving with=20
it. The perversions and nonsense that the strokes come up with is =
not going=20
to cut it , can not be rationally explained or justified, is the root of =
most=20
accidents , and for them we have Rule Number =
One.</FONT></SPAN></DIV>
<DIV><SPAN class=3D547595212-20012002><FONT face=3DArial
color=3D#0000ff =

size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D547595212-20012002><FONT face=3DArial
color=3D#0000ff =
size=3D2>I=20
don't care what kind of stupid things anyone else dopes, but don't =
expect=20
me to do anything but laugh and call it stupid. Brett Gilliam has been =
doing=20
extremely deep air dives for years , and so I guess by the logic of =
you and=20
the Brits, this must be ok since he is still alive. =
Right?</FONT></SPAN></DIV>
<DIV><SPAN class=3D547595212-20012002><FONT face=3DArial
color=3D#0000ff =

size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D547595212-20012002><FONT face=3DArial
color=3D#0000ff =
size=3D2>Jeff,=20
don't bother trying to tell me about anything underwater. I think you =
are a=20
complete moron, and I don't want to hear it.</DIV></FONT></SPAN>
<BLOCKQUOTE>
  <DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
  size=3D2>-----Original Message-----<BR><B>From:</B>
JDisler401@ao*.co* =

  [mailto:JDisler401@ao*.co*]<BR><B>Sent:</B> Saturday, January 19,
2002 =
6:07=20
  PM<BR><B>To:</B> girvine@be*.ne*; =
scoff_cavedivinggroup@ho*.co*;=20
  techdiver@aquanaut.com<BR><B>Subject:</B> Re: Helmets for cave
diving. =
What's=20
  the deal?<BR><BR></FONT></DIV><FONT
face=3Darial,helvetica><FONT =
lang=3D0=20
  face=3DArial size=3D2 FAMILY=3D"SANSSERIF">In a message dated =
01/19/2002 8:07:24 AM=20
  Central Standard Time, girvine@be*.ne* writes: <BR></FONT><FONT =
lang=3D0=20
  face=3DArial color=3D#000000 size=3D3 =
FAMILY=3D"SANSSERIF"><BR></FONT><FONT lang=3D0=20
  face=3DArial color=3D#0000ff size=3D2 FAMILY=3D"SANSSERIF">Look, =
idiot, there is no=20
  excuse for doing things the way these guys do it. Helmet in =
</FONT><FONT=20
  lang=3D0 face=3DArial color=3D#0000ff size=3D3 =
FAMILY=3D"SANSSERIF"><BR></FONT><FONT=20
  lang=3D0 face=3DArial color=3D#0000ff size=3D2 FAMILY=3D"SANSSERIF">
  <BLOCKQUOTE=20
  style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px"=20
  TYPE=3D"CITE">the dry cave is one thing, the rest of what you are =
saying=20
    reflects that fact that you don't do jack shit, and don't know. =
</FONT><FONT=20
    lang=3D0 face=3DArial color=3D#0000ff size=3D3=20
  FAMILY=3D"SANSSERIF"></BLOCKQUOTE><BR></FONT><FONT lang=3D0 =
face=3DArial=20
  color=3D#000000 size=3D3 FAMILY=3D"SANSSERIF"><BR>Hey, I was in a dry =
cave once, and=20
  there was water in there too. <BR><BR>So how do you sump dive? If the =
dry cave=20
  is beyond a sump or several, how do you get the helmet =
there?</FONT><FONT=20
  lang=3D0 face=3DArial color=3D#0000ff size=3D3 FAMILY=3D"SANSSERIF">=20
  <BR><BR></FONT><FONT lang=3D0 face=3DArial color=3D#0000ff
size=3D2=20
  FAMILY=3D"SANSSERIF">Reinhard explores sump/dry stuff that you can't =
even=20
  understand the severity of, and </FONT><FONT lang=3D0 face=3DArial =
color=3D#0000ff=20
  size=3D3 FAMILY=3D"SANSSERIF"><BR></FONT><FONT lang=3D0 face=3DArial
=
color=3D#0000ff=20
  size=3D2 FAMILY=3D"SANSSERIF">
  <BLOCKQUOTE=20
  style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px"=20
  TYPE=3D"CITE">he has no problem bringing g all the right gear and DIR =
at the=20
    same time. </FONT><FONT lang=3D0 face=3DArial color=3D#0000ff =
size=3D3=20
    FAMILY=3D"SANSSERIF"></BLOCKQUOTE><BR><BR></FONT><FONT
lang=3D0 =
face=3DArial=20
  color=3D#000000 size=3D3 FAMILY=3D"SANSSERIF">Agreed the push in =
France was no small=20
  feat and is to be highly respected. It took an equipment configuration =
which=20
  provided the best possible means to explore Doux de Coly with its =
unique=20
  conditions. <BR>But I'm certain what he used there will not work in =
all places=20
  on the planet.</FONT><FONT lang=3D0 face=3DArial color=3D#0000ff =
size=3D3=20
  FAMILY=3D"SANSSERIF"> <BR></FONT><FONT lang=3D0 face=3DArial =
color=3D#0000ff size=3D2=20
  FAMILY=3D"SANSSERIF"> </FONT><FONT lang=3D0 face=3DArial =
color=3D#000000 size=3D2=20
  FAMILY=3D"SANSSERIF">
  <BLOCKQUOTE=20
  style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px"=20
  TYPE=3D"CITE"> Perhaps you could forward this to him so he can =
elaborate=20
    on his sump diving </FONT><FONT lang=3D0 face=3DArial =
color=3D#000000 size=3D3=20
    FAMILY=3D"SANSSERIF"></BLOCKQUOTE><BR>  techniques. =
<BR>I'd like to=20
  know if he wears a helmet for his dry cave explorations, and how he =
gets=20
    it beyond the sump.</FONT><FONT lang=3D0 face=3DArial =
color=3D#000000=20
  size=3D2 FAMILY=3D"SANSSERIF"> </FONT><FONT lang=3D0 face=3DArial =
color=3D#000000 size=3D3=20
  FAMILY=3D"SANSSERIF"><BR></FONT><FONT lang=3D0 face=3DArial =
color=3D#000000 size=3D2=20
  FAMILY=3D"SANSSERIF">I'd be very surprised if he makes use of a =
standard DIR rig=20
  (which I know is the right </FONT><FONT lang=3D0 face=3DArial =
color=3D#000000 size=3D3=20
  FAMILY=3D"SANSSERIF"><BR></FONT><FONT lang=3D0 face=3DArial =
color=3D#000000 size=3D2=20
  FAMILY=3D"SANSSERIF">
  <BLOCKQUOTE=20
  style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px"=20
  TYPE=3D"CITE">configuraton for cave springs which can be accessed=20
    easily).</FONT><FONT lang=3D0 face=3DArial color=3D#000000 size=3D3=20
    FAMILY=3D"SANSSERIF"></BLOCKQUOTE><BR></FONT><FONT lang=3D0 =
face=3DArial=20
  color=3D#000000 size=3D2 FAMILY=3D"SANSSERIF"><BR>N
  <BLOCKQUOTE=20
  style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px"=20
  TYPE=3D"CITE">ow if he can get a set of doubles and full DIR gear to =
the sump,=20
    then I'd say that is the best way to dive in that particular sump. =
That is=20
    also what I would do under these circumstances. <BR>If he has to =
side mount=20
    then I'd be very surprised if he makes use of a standard DIR harness =
and=20
    backplate, but I know some who like this method. <BR></FONT><FONT =
lang=3D0=20
    face=3DArial color=3D#000000 size=3D3=20
  FAMILY=3D"SANSSERIF"></BLOCKQUOTE><BR></FONT><FONT lang=3D0 =
face=3DArial=20
  color=3D#000000 size=3D2 FAMILY=3D"SANSSERIF">For a period, I used the =
standard=20
  backplate and harness as a sidemount rig but discontinued doing so =
about 12=20
  years ago. Personally, I did not care for the increase in profile, nor
  <BLOCKQUOTE=20
  style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px"=20
  TYPE=3D"CITE">did I like the way the backplate interfered with my =
crawling and=20
    climbing.</FONT><FONT lang=3D0 face=3DArial color=3D#000000 size=3D3 =

    FAMILY=3D"SANSSERIF"></BLOCKQUOTE><BR> </FONT><FONT
lang=3D0 =
face=3DArial=20
  color=3D#000000 size=3D2 FAMILY=3D"SANSSERIF"> I made a sidemount =
harness built=20
  for the specific purpose of sump diving which enables me more freedom =
of=20
  movement both under and above the water. <BR></FONT><FONT lang=3D0 =
face=3DArial=20
  color=3D#000000 size=3D3 FAMILY=3D"SANSSERIF"><BR></FONT><FONT =
lang=3D0 face=3DArial=20
  color=3D#0000ff size=3D3 FAMILY=3D"SANSSERIF"><BR></FONT><FONT =
lang=3D0 face=3DArial=20
  color=3D#000000 size=3D2 FAMILY=3D"SANSSERIF">Hey, I'm not one of =
those</FONT><FONT=20
  lang=3D0 face=3DArial color=3D#0000ff size=3D2 FAMILY=3D"SANSSERIF"> =
guys keep on trying=20
  to tell us all why idiocy and the "every man for himself", =
</FONT><FONT lang=3D0=20
  face=3DArial color=3D#0000ff size=3D3 =
FAMILY=3D"SANSSERIF"><BR></FONT><FONT lang=3D0=20
  face=3DArial color=3D#0000ff size=3D2 FAMILY=3D"SANSSERIF">
  <BLOCKQUOTE=20
  style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px"=20
  TYPE=3D"CITE">"fuck your buddies", Star Wars Bar Scene mentality is =
such a=20
    noble thing. <BR></BLOCKQUOTE><BR>The fact is that no matter how =
well you try=20
  to articulate stupidity, it is still stupidity. <BR></FONT><FONT =
lang=3D0=20
  face=3DArial color=3D#000000 size=3D2 FAMILY=3D"SANSSERIF">I totally =
agree.=20
  <BR><BR>"Silt Happens" JD</FONT><FONT lang=3D0 face=3DArial =
color=3D#0000ff size=3D3=20
  FAMILY=3D"SANSSERIF"> <BR><BR></FONT><FONT lang=3D0 face=3DArial =
color=3D#000000=20
  size=3D3 FAMILY=3D"SANSSERIF"><BR><BR><BR></FONT><FONT
lang=3D0 =
face=3DArial=20
  color=3D#000000 size=3D3 FAMILY=3D"SANSSERIF"><BR></FONT><FONT =
lang=3D0 face=3DArial=20
  color=3D#000000 size=3D2 FAMILY=3D"SANSSERIF"><BR></FONT><FONT =
lang=3D0 face=3DTahoma=20
  color=3D#000000 size=3D2 FAMILY=3D"SANSSERIF">
  <BLOCKQUOTE=20
  style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px"=20
  TYPE=3D"CITE">
    <BLOCKQUOTE=20
    style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff =
2px solid; MARGIN-RIGHT: 0px"=20
    TYPE=3D"CITE">-----Original Message----- <BR><B>From:</B> =
JDisler401@ao*.co*=20
      [mailto:JDisler401@ao*.co*] <BR><B>Sent:</B> Friday, January 18,
=
2002=20
      12:43 AM <BR><B>To:</B> scoff_cavedivinggroup@ho*.co*;=20
      techdiver@aquanaut.com <BR><B>Subject:</B> Re: Helmets for cave =
diving.=20
      What's the deal? <BR><BR></FONT><FONT lang=3D0 face=3DTahoma =
color=3D#000000=20
      size=3D3 FAMILY=3D"SANSSERIF"><BR></FONT><FONT lang=3D0 =
face=3Darial color=3D#000000=20
      size=3D2 FAMILY=3D"SANSSERIF">Greetings scoff, <BR><BR>Well said =
and true to=20
      reality are the words you have shared. <BR><BR>I think the most =
basic=20
      philosophy of anyone who dry caves is to wear a helmet. =
<BR><BR>For the=20
      sake of argument, or to perhaps conclude this argument... =
<BR>Imagine a=20
      sump (small, large, within any stratum, etc..)  which =
necessitates a=20
      dive for the dry caver to reach the airfilled cave beyond. =
<BR><BR>The=20
      experienced dry caver (that is someone who actually dry caves) =
will,=20
      <BR>A. Most likely choose to wear a helmet to reach the sump. =
<BR><BR>B.=20
      Most likely wish to have a helmet to explore the airfilled =
sections beyond=20
      the sump. <BR><BR>Personally I would choose all of the above, but =
If I had=20
      to choose between A or B, I would unquestionably select B for the =
simple=20
      reason, that is the location where Murphy could make some very =
serious=20
      problems. <BR><BR>So now that the use of proper headgear has been=20
      selected, the choice of lighting becomes a second consideration. =
<BR>The=20
      light selected must have, <BR><BR>A. The ability to become attach =
to the=20
      helmet which ultimately will become one with the caver.(This due =
to the=20
      reasons you have outlined, hands free lighting for the purpose of=20
      negotiating the airfilled cave passage, etc.) <BR><BR>B.Have =
extended burn=20
      times, because of the nature of this activity,(aka sump diving).=20
      <BR><BR>C.Desirable power to weight ratio and durability. =
<BR><BR>D.Usable=20
      both in and out of the submerged sections of passage and without =
the need=20
      for reconfiguration of gear. In other words, to go from dry cave =
mode to=20
      dive mode and back with as little hassle as possible. <BR><BR>So =
now the=20
      marriage of headgear and lighting has been made and hopefully the=20
      suitability of same has been made somewhat clear. <BR>How would =
the helmet=20
      best be carried through the sump?  I'd suggest it would be on =
the=20
      head of the explorer. <BR><BR>The above method equates to less =
extraneous=20
      gear which simplifies the logistics. <BR><BR>Scoff, as you also =
have=20
      pointed out, it is possible to wear a helmet mounted light without =

      blinding team members. <BR>It is also possible, given adequate =
visibility,=20
      to shield the light to search for a team members light or to =
signal same.=20
      <BR><BR>I agree that the suitability of DIR has been well noted =
and I=20
      believe that some conditions do support it's use better than =
others.=20
      <BR><BR>Also, I am not suggesting this is the only way to dive in =
sumps,=20
      and would like to hear from others who have successfully used DIR =
for=20
      actual sump dives. <BR>What equipment configuration was used to =
explore=20
      the airfilled passage beyond the sump? Anyone? <BR><BR>Disclaimer, =
I do=20
      not claim to be an expert on any type of diving, but I did stay in =
a=20
      Holiday Inn Express last night. <BR><BR>"Silt Happens" =
JD</FONT><FONT=20
      lang=3D0 face=3Darial color=3D#000000 size=3D3 =
FAMILY=3D"SANSSERIF">=20
    </BLOCKQUOTE><BR></FONT><FONT lang=3D0 face=3DArial
color=3D#000000 =
size=3D2=20
    =
FAMILY=3D"SANSSERIF"></BLOCKQUOTE><BR><BR></BLOCKQUOTE></FONT><
;/FONT></BO=
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