[Coral-List] Subject: Re: Underwater Drill
Etichscuba at aol.com
Etichscuba at aol.com
Thu Feb 22 14:16:44 EST 2007
Subject: Re: [Coral-List] Underwater Drill
In the US ethylene glycol and petroleum products are classified as hazardous
materials and therefore appropriate disposal practices must be adhered
followed. My concern is how do you cleanup these oil soaked drills before reuse to
prevent the introduction of contaminants into the coral reef ecosystem?
Ed Tichenor
Palm Beach County Reef Rescue
_www.reef-rescue.org_ (http://www.reef-rescue.org)
Message: 1
Date: Wed, 21 Feb 2007 07:43:26 -0600
From: "Boland, Gregory" <Gregory.Boland at mms.gov>
Subject: Re: [Coral-List] Underwater Drill
To: <coral-list at coral.aoml.noaa.gov>
Message-ID:
<82ABF19AC0F67D40A0E2B2F5949BE8E204B6D9B4 at IMSNEXPRI02.service.agency.mms.pri>
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To all,
Another good option is to put your drill, bits and tools in a bucket of
antifreeze and just leave everything there between trips. Helps to run
the drill a little after submerged in the antifreeze. The ethylene
glycol replaces the seawater. We had inexpensive drills last for years
during Flower Garden Banks photo station installations.
Greg
-----Original Message-----
From: coral-list-bounces at coral.aoml.noaa.gov
[mailto:coral-list-bounces at coral.aoml.noaa.gov] On Behalf Of Tupper,
Mark (WorldFish)
Sent: Tuesday, February 20, 2007 8:24 PM
To: aj.martignette at comcast.net; coral-list at coral.aoml.noaa.gov
Subject: Re: [Coral-List] Underwater Drill
Dear A.J. and list,
I have used a hand-held drill to mount eye bolts into dead coral heads.
It was a pneumatic drill from NAPA, available from any NAPA auto parts
store for about $100 (I purchased a higher-end drill hoping it would be
a bit more rugged than the cheaper models). My drill lasted 2 years
rather than 2 days. I found that the trick was to NOT soak it in
freshwater after each use. Instead, soak it in diesel (yes, diesel)
overnight, then remove the casing and oil all the internal parts. One
other advantage of a slightly more expensive drill is that it may be
more powerful and efficient. I was drilling 1/2 inch holes 6-8 inches
deep, just as Kristen reports, but I could get about 7 or 8 holes
drilled with one 80 cubic foot tank. I think that once dead coral heads
have been worked over by various boring organisms, they might be easier
to drill than solid concrete. Just make sure you use a good masonry bit
- standard drill bits are meant for wood and won't get the job done.
Cheers,
Mark Tupper
The WorldFish Center
Penang, Malaysia
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