Who wrote the calculators, and why they are cited the way they are.
Hi, I am Dan Gauerke. I am 32, a mining engineer out of Virginia Tech. I started in the coal mines as a laborer. Since then I have worked in salt mines, gold mines and emerald mines.
I learned to run every piece of equipment underground, then worked my way up: shift boss, mining engineer, project engineer, project controller, superintendent, project manager. Ten years with underground mining contractors across Australia, the United States and Colombia.
So I have been on both sides of the daily report. I wrote them at the face after twelve hours, and I chased miners from the office for what they left out.
On my last job I taught myself to code, late at night in the Colombian jungle after shift. I got obsessed with AI and started a consultancy automating admin work for over 65 companies. Now I am going back to my roots and doing it for mining contractors.
Every equation and every constant in these tools is cited to a published handbook, with the edition and the page. That is not decoration. If a number is wrong you should be able to find out where it came from and check it yourself, and if my transcription is wrong you should be able to catch me. An estimating tool that cannot be audited is not worth much on a job where the answer informs ground support or a blast.
They are estimating aids, not engineering designs. The full terms are on the disclaimer page.