Land Surveyor Forum

Replies

• Land Surveyor

  J. Anthony Cavell October 27, 2017 at 8:18pm

  • Constantly check control monuments for possible movement.
  • When working in the excavation, be aware of geometric limitations (short sights, blockage of satellite signals).
  • Personnel safety from heavy equipment, slides, and quick-sands.
  • Getting invoices paid in a timely way.

  JAC
  • Retired Surveyor

    Bernard Loeffler > J. Anthony Cavell October 31, 2017 at 4:39pm

    Many years ago I opened a quarry for US Army Corps of Engineers (Combat Units' Training) on the Navajo Nation. Not much to do with actual surveying, but had some interesting meetings with MSHA  throughout the entire summer with the Army's combat engineering equipment used on the quarry site. Needless to say, MSHA was not impressed!. We brought in two battalions at a time to construct various horizontal training projects on the Navajo Nation, and used two 140 Ton/Hr (civilian ) and two (US Army) 90 Ton/Hr crushing and screening plants. The Navajo Nation wouldn't let us blast, so we did mechanical extraction with 12 Cat 610 excavators with 7,500# hammers. We were mining alluvial granite (extremely hard) half of our equipment was mining and the other half being mined.Talk about herding cats! 

    JAC is right, quarries are deadly dangerous. After heavy rat-tat-tat, 24/7 for weeks, the mountainside took a heavy sigh and releases several thousand tons of boulders, and never mind what's in its way..  

    Of interest may be how you mark its perimeter, and varying height (elevation) for quick, accurate inventory of product released, removed and remaining (R3). My uncle owned a very large gravel pit in Northern Minnesota. It is actually an endless pit, as its been (and continues to be) mined heavily for 60 years, And yes, deadly, as two of my cousins died in that pit,

    Bernie