I just made a separate post with 2 links. I have more saved and will add to the list. The rock/Tunnel boring machines used by the US Air Force are massive! I remember listening to Dr. Deagle years ago saying they are capable of boring a couple miles a Day!
Thanks for the idea LakotaPride!
Thank you Patriot, we have done the research ,and I forget sometimes people are still out there that need the information from the beginning, and you really helped with this, because people will learn we have had this technology. I am so glad you brought this up and even making a thread with it. I remember I felt surprised also when I heard how fast they were able to tunnel
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