texascavers Digest 14 Jun 2011 16:38:42 -0000 Issue 1334
Topics (messages 18040 through 18046):
Re: Distinguished Lecture Presentation, Thursday, July 14.
18040 by: Geary Schindel
anyone have Aaron Miller's email or phone #?
18041 by: Dale Barnard
Re: Headlamp question
18042 by: Bill Bentley
18043 by: Mallory Mayeux
18044 by: Stefan Creaser
18045 by: Mark.Alman.L-3com.com
18046 by: Mark.Alman.L-3com.com
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--- Begin Message ---
Folks,
Edwards Aquifer Authority is pleased to announce that Dr. Petar Milanovic and
Dr. Neven Kresic will be the Authority's next Distinguished Lecturers. The
lecture starts at 9 am and ends around 4:30 pm on Thursday, July 14th. The
lecture will be held at Southwest Research Institute where both Dr. Milanovic
and Dr. Kresic will be presenting. Both Dr. Milanovic and Dr. Kresic have
authored numerous books and papers on karst hydrology and have worked on
applied karst problems around the world. Registration deadline is Tuesday,
July 12, 2011; however, attendance will be limited and we only have about 15
openings left.
The cost of the lecture is $20 and $10 for students and includes lunch, drinks,
and snacks.If you are interested in attending. To register, please contact Ms.
Elida Bocanegra by email at
[email protected]<mailto:[email protected]> or by
calling 210.222.2204. If you would like a copy of the flyer, please email me.
Please see the attached flyer for registration information.
Hope to see you there.
Geary
Geary M. Schindel, P.G.
Chief Technical Officer
EDWARDS AQUIFER
A U T H O R I T Y
1615 N. ST. MARY'S STREET
SAN ANTONIO, TX 78215
(210) 222.2204 OFFICE
(210) 299.5262 FAX
(210) 326.1576 MOBILE
TOPICS TO BE COVERED
Dr. Petar Milanovic will speak on the following topics:
* the role of basic geological and hydrogeological properties in
construction of large structures in karst;
* technical difficulties and failures of man-made structures as
consequence of karst; and
* surface and underground remediation as key part of risk
reduction strategy in karst.
Dr. Neven Kresic will speak on the following topics:
* conceptual site models (in karst) and their translation into
mathematical models;
* times-series and numeric models-types, data requirements,
limitations; and
* models as engineering and management tools.
ABOUT THE PRESENTERS
Dr. Milanovic
Dr. Petar Milanovic (Belgrade, Serbia) has more than 40 years experience in the
investigation,
analysis, and design of geotechnical structures related to different civil
structures in karstified rock
masses. His experience includes the study of karst and investigations of
leakage and stability
problems for dams, reservoirs, tunnels and other civil structures, including
water supply projects. A
considerable part of his activities has focused on environmental and water
protection in karst areas.
Dr. Milanovic is an author of more than 60 technical papers and has written a
large number of
reports pertaining to hydrogeology and remedial works with dam, reservoir and
tunneling projects.
He has written five books pertaining to karst hydrogeology and hydrogeological
and geotechnical
problems in karst based on his experience in many countries. His last book
"Water Resources
Engineering in Karst," published in U.S. (2004), brings together the
information required for
understanding the design and behavior of structures in karst. Dr. Malanovic is
an active member of
International Associations of Hydrogeologists (IAH) and has been a member of
the IAH Karst
Commission for more than 35 years. Presently, he is president of the Serbian
IAH chapter and a
member of Governing Board of International Karst Institute in China under the
auspices of United
Nations Educational, Scientific and Cultural Organization.
Dr. Kresic
Dr. Neven Kresic is a National Hydrogeology Practice Leader with MACTEC
Engineering and
Consulting, Inc. in Ashburn, VA (metro Washington, DC). In addition to karst
hydrogeology, his areas
of expertise include groundwater engineering, modeling, and remediation for
major projects in the
United States, Eastern Europe, the Middle East and North Africa. He has
authored six books,
including "Groundwater Resources: Sustainability, Management and Restoration"
by McGraw-Hill
(2009), and "Groundwater Hydrology of Springs: Engineering, Theory, Management
and Sustainability"
by Elsevier Science & Technology (2010). He was professor at Belgrade
University in the former
Yugoslavia and at Texas Christian University, Fort Worth, Texas. Dr. Kresic
came to the United States
in 1991 as Senior Fulbright Scholar at the United States Geological Survey
(USGS) in Reston, VA
and at George Washington University, Washington, DC, where he conducted
research on modeling
and contaminant transport in karst aquifers. He is co-chair of the Karst
Commission of the International
Association of Hydrogeologists, and a committee member of the Groundwater
Management and
Remediation Specialty Group of the International Water Association. In 2009, he
served as guest
editor for a special karst issue of the journal Ground Water.
--- End Message ---
--- Begin Message ---
anyone have Aaron Miller's email or phone #?
Thanks,
Dale
--- End Message ---
--- Begin Message ---
Do I need to bring free tubes of Dialectirc Silicone Grease to TCR?
----- Original Message ----- tFrom: Andy Gluesenkamp
To: Mark Minton ; [email protected]
Sent: Tuesday, June 14, 2011 7:25 AM
Subject: Re: [Texascavers] Headlamp question
I second everything that Mark said below about the StenLight. A dab of
dielectric grease on the connector seems to do the trick. Exceptional customer
service. They sent me a waterproof battery pack at one point but the thing is
pretty bulky compared to the standard pack and won't stay on the helmet using
the velcro they provide. I just strap it down like every other battery pack.
Andrew G. Gluesenkamp, Ph.D.
700 Billie Brooks Drive
Driftwood, Texas 78619
(512) 799-1095
[email protected]
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From: Mark Minton <[email protected]>
To: [email protected]
Sent: Mon, June 13, 2011 8:37:40 PM
Subject: RE: [Texascavers] Headlamp question
Whatever kind of light you get, you'll definitely want to go with
LEDs. Incandescent just can't compete when it comes to brightness and battery
life. And for batteries, you can't beat lithium ion. They are small,
lightweight, long-lasting, very reliable and much cheaper in the long run over
disposable types. I dislike waist-mounted battery packs with their respective
cords, but with lithium ion you can easily mount the battery on the helmet.
For my money, the Sten Light is the best available for general
caving. It is not a diving light, but it is definitely waterproof enough to
use on any normal trip, even in a wet cave like Honey Creek. According to
their web site it is waterproof to 8 meters, which is enough for anything most
cavers will encounter. I've worn mine on free dives a couple of meters deep
with no problem. The cord connector, while definitely not watertight, has
never been a problem for me. They're not cheap, but a very worthwhile
investment. They also have excellent customer service and will usually repair
any problem short of actual abuse for free.
Mark
At 04:54 PM 6/13/2011, Stefan Creaser wrote:
> I second the durability of FX-2's; I've had mine for more than 15yrs and
it's still going strong. It's outlasted numerous helmet mounted lights, though
it is more robustly made (for caving).
>
> Looks like you can still get old ones:
>
>
http://www.thecavingandclimbingshop.com/epages/BT3421.sf/en_GB/?ObjectPath=/Shops/BT3421/Categories/Caving_Equipment/Lighting%5B1%5D/SpeleoTechnics
>
> http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=300555317667
>
> Cheers,
> Stefan
>
> From: Josh Rubinstein [mailto:[email protected]]
> Sent: Monday, June 13, 2011 3:26 PM
> To: Allan B. Cobb
> Cc: Tim Stich; Don Arburn; Mallory Mayeux; [email protected]
> Subject: Re: [Texascavers] Headlamp question
>
> Allan,
>
> I like my Sten Light too. It is not NOT a good waterproof light. The
battery contains circuitry. The plug connection between the battery and the
light is a portal for water. Not a good combination. The risk can be lessen by
coating the connection with dielectric grease.
>
> The light I use for exploring water caves is no longer available. Speleo
Technic FX2 was the brightest, least bulky and most robust light of its day.
Now the incandescent light powered by a NiCd battery on a belt is still one of
the most robust. Mine is a twenty plus years old. If I have not killed, it is
not for lack of trying. I have surveyed with the head piece half filled with
water with no ill effect. But in this era of retina burning lasers, it is no
longer the bright light.
>
> Josh
> On Mon, Jun 13, 2011 at 12:45 PM, Allan B. Cobb <[email protected]> wrote:
> I am really fond of my Sten light. It is not cheap but it is dependable,
robust, and fairly water resistant.
>
> In answer to Malory's original question, I used to use a Duo and it worked
well for me. I highly recommend the LED version. For casual caving, it will
work just fine.
>
> Allan
>
> From: Tim Stich
> Sent: Monday, June 13, 2011 12:40 PM
> To: Allan B. Cobb
> Cc: Don Arburn ; Mallory Mayeux ; [email protected]
> Subject: Re: [Texascavers] Headlamp question
>
> I'm kind of curious as well about the best waterproof headlamp for the
money out there. For what I used them for these days, the cheap ones work fine.
But for caving I would want a much tougher light.
> On Mon, Jun 13, 2011 at 11:35 AM, Allan B. Cobb <[email protected]> wrote:
> Autolite Carbide Lamp!
>
> -----Original Message----- From: Don Arburn
> Sent: Monday, June 13, 2011 12:15 PM
> To: Mallory Mayeux
> Cc: [email protected]
> Subject: Re: [Texascavers] Headlamp question
>
> Wheatlamp!
>
> Don's iPhone.
>
> On Jun 13, 2011, at 12:15 PM, Mallory Mayeux <[email protected]> wrote:
> Hello Cavers!
>
> I am toying with the idea of purchasing a new headlamp and wanted some
opinions--is anyone using the Petzl Duo? If so, how do you like it? For the
money, is there something else you would recommend?
>
> Mallory
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--- End Message ---
--- Begin Message ---
Thanks everyone! It's nice to see lively discussion on Cavetex...it's been
eerily quiet since David left.
I currently have a Princeton Apex Tec, which is nice, especially for the
price, but I think it's time for a brighter light. Roger Moore has very
generously offered to loan me his new Sten until I upgrade, but I wanted to
start getting opinions because discussing gear is so fun. :) I've seen
several cavers with the Duo, so thanks for the insight. Waterproof is
important for me, since I don't want to have to switch out lights between
water and dry caves.
I think my current plan is to go ahead and save up for a Sten, unless I see
a Petzl Duo on some sort of super-sale somewhere.
-Mallory
--- End Message ---
--- Begin Message ---
For the wrestling pit?
From: Bill Bentley [mailto:[email protected]]
Do I need to bring free tubes of Dialectirc Silicone Grease to TCR?
-- IMPORTANT NOTICE: The contents of this email and any attachments are
confidential and may also be privileged. If you are not the intended recipient,
please notify the sender immediately and do not disclose the contents to any
other person, use it for any purpose, or store or copy the information in any
medium. Thank you.
--- End Message ---
--- Begin Message ---
I'm in love with the Scurion, Mallory, since Bill Steele so generously
let me borrow Michael Cicherski's at Jester Cave earlier this year.
But, alas, I don't have $700 laying around for one.
Talk about a nice, rugged light!
I have the Princeton Apex Tec, as well as having bought three for my
kids.
We've had good luck, for the most part, but mine did start acting up
where I couldn't turn it off. I took out the batteries, and put them
back in. Now it won't come on.
I have sent them an email on getting it repaired (they have a lifetime
warranty), but haven't heard back.
Suggestions?
Mark
From: Mallory Mayeux [mailto:[email protected]]
Sent: Tuesday, June 14, 2011 11:35 AM
To: caverarch
Cc: [email protected]; [email protected]; [email protected];
[email protected]
Subject: Re: [Texascavers] Headlamp question
Thanks everyone! It's nice to see lively discussion on Cavetex...it's
been eerily quiet since David left.
I currently have a Princeton Apex Tec, which is nice, especially for the
price, but I think it's time for a brighter light. Roger Moore has very
generously offered to loan me his new Sten until I upgrade, but I wanted
to start getting opinions because discussing gear is so fun. :) I've
seen several cavers with the Duo, so thanks for the insight. Waterproof
is important for me, since I don't want to have to switch out lights
between water and dry caves.
I think my current plan is to go ahead and save up for a Sten, unless I
see a Petzl Duo on some sort of super-sale somewhere.
-Mallory
--- End Message ---
--- Begin Message ---
I was going to go there, but, thought better of it, Stefan!
I guess degenerate minds do think alike!
Mark
From: Stefan Creaser [mailto:[email protected]]
Sent: Tuesday, June 14, 2011 11:40 AM
To: Bill Bentley; [email protected]
Subject: RE: [Texascavers] Headlamp question
For the wrestling pit?
From: Bill Bentley [mailto:[email protected]]
Do I need to bring free tubes of Dialectirc Silicone Grease to TCR?
-- IMPORTANT NOTICE: The contents of this email and any attachments are
confidential and may also be privileged. If you are not the intended
recipient, please notify the sender immediately and do not disclose the
contents to any other person, use it for any purpose, or store or copy
the information in any medium. Thank you.
--- End Message ---
