[PRCo] Oil City counterbalance(!)

Thu May 3 16:03:34 EDT 2018

On Thu, May 3, 2018 at 2:24 PM, Edward H. Lybarger <trams2 at comcast.net>
wrote:

> How difficult would it have been in those days to drill a hole 900 (or
> 1000,
> as quoted earlier) feet down for the counterweight?  Coal mines reached
> several hundred feet down, but those were dug shafts.
>
>
An oil well style hole? Well, in 1890 1100 foot wells existed:
https://books.google.com/books?id=PrFHAQAAMAAJ&pg=PA103&lpg=PA103&dq=oil+well+drilled+1890+%22depth+of%22&source=bl&ots=qzkTZMt2jW&sig=E8zg-xxBlwwUpgCz2pEnaitHhJA&hl=en&sa=X&ved=0ahUKEwit24WEq-raAhXrxlQKHeXEBVEQ6AEIgQEwBw#v=onepage&q=oil%20well%20drilled%201890%20%22depth%20of%22&f=false

-- 
Daria Phoebe Brashear
AuriStor, Inc
dariaphoebe.com

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