I had not heard of shape-memory alloys being used to split rock, but it makes
sense. A related method uses an expanding clay powder that is mixed with water
to form a paste and then poured into a drill hole. As it dries, it expands and
breaks the rock. Disadvantages of the clay method are that i
Mike Hennessy died on January 6, 2020. He was a caver in the 1970's with the
Than SWT Grotto. Logan McNatt might have more information for your Web page.
I hadn't realized so many cavers have passed, especially in 2019.
Thanks for the info. Keep it up.
Keith Heuss
On Sunday, February 2,
Reminds me of the time we were invited to a big ranch in west Texas to check
out a cave. The owner said he knew it had to be big because his wife had once
spent all day in there with the ranch foreman. Turned out it was only one room.
Wonder what they did in there all day. Hmmm.
Mark Minton
mmi
The UT Grotto meets again this coming Wednesday, February 5th at 7:30 pm at
The High Road on Dawson - 700 Dawson Road, Austin, TX 78704, off Barton
Springs Road. Please, no outside food or beverages. They have happy hours
from 5-7 pm for $2-$3 beers, otherwise beer is $3-$4 and a burger with
fries
Greetings Cavers,
Ah, sorry - I don't look at the email much. We are moving all the talks to
our YouTube channel! There may be some small lag from the night they are
presented until they are posted. I think the person who posts the videos is
at NCRC this week, so that one hasn't been posted yet.
I
I was going through some old NASA Tech Briefs and came across this.
https://www.techbriefs.com/component/content/article/tb/techbriefs/mechanics-and-machinery/33375
https://technology.nasa.gov/patent/LEW-TOPS-87
ntrs.nasa.gov › archive › nasa › casi.ntrs.nasa.gov
Shape Memory Alloy Rock Splitte
“The Hall” at http://cavelife.info/hall/hall.htm is dedicated to tributes,
biographies, obituaries, and photos about departed cavers and cave
scientists who caved in Texas or Mexico. I launched the web page on 5
September 2019 after we lost so many old friends in 2019.
I recently completed most of
thanks Andy. Jill told me that the cave was being privately explored and that
it was purportedly "3 miles long and going” which made me think, if true, that
cavers would know about it. She was on the ranch studying golden cheek
warblers as there was habitat.
I’m highly dubious of most claim
Leakey is Real county. There are some caves that have been known for a long
time there, names elude me at the moment. The Geology is favorable for caves.
Good limestones in the Edwards section, potential confining layers in the
underlying Glen Rose. The Frio and its branches are cutting into t
