Gene, as you are a cattle guy.?ÿ Can you explain to those here the difference between a limousine and a limousin?
Limousine is a large car complete with chauffeur.
Limousin is a French breed of B?uf cattle....also the region in France where they come from.
Excellente, bon ami.
Now, if we could get everyone to agree on affect/effect, viola/voila, accept/except, wave/waive and many others.
@stacy-carroll I've still got the circa 1966 K & E transit my dad's earthmoving company used back in the day, very similar to what you describe here. I used it for a year or so when I went out on my own in the early '80's. When I got my first top-mount EDM I had fun asking the salesman if it could be mounted atop the K & E. He advised against this & I'm glad I decided to listen to the grownups.
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I am working in a room and pillar mine, with 50 foot wide rooms, 150 foot centers and 10 to 15 foot roof heights.
I have spads or brackets in the roof at 150 foot intervals. I am using 10 year old equipment. A Leica 1200 robot with a VHF radio link, GRZ4 360 prism and an Allegro Mx with Carlson SurvCE. I work out of a pickup truck with a scissor lift on the back. I typically set up under a plumb bob (there is a divot in the carry handle for center) at a point and back sight a point 300 feet away using a custom mount to hang the plumb bob. There is a marker hanging at each point, so I can point the instrument at it before getting the back sight. As long as the instrument is looking in the general direction of the prism, it will find it without any external light, just the laser and guide lights. I have a prism mount on the back of the truck, so I have the instrument turn to the next point and get close to line and it usually finds the prism, locks and tracks without any issues. I have staked out thousands of points, run miles of traverse, and done topo all underground and mostly in the dark with out any issues. I am also working solo 99% of the time. There are other miners around and my location is known.|
Also, before the Leica, we had a Topcon 815A that worked in the dark and I have used my personal Sokkia SRX in the dark on the surface and it works just fine.
If we have a geodetic bearing we will run the line in with staff compass. This gets the line laths distributed along the line, we clear the line at that time then traverse over it later, much easier to follow the line that way.
I've never worked in a mine.?ÿ I did use a Topcon 802a robot for airport work at night and it worked great.?ÿ No problem with tracking and environmental conditions are much better than daytime. The only thing better than being solo is working solo at night.?ÿ Nice and quiet and a lot less crap gets in the way.
