Using an auger to perform elevator clean out a old elevator jack hole & drilling out the old, (compromised P.V.C. casing).
It can be a very dirty job , but someone needs to do it.
Occasionally we encounter jack holes, backfilled with the original hole drilling spoils. Unfortunately sometimes it’s rock, & rock cuttings. However with our equipment design, it slows us down a bit, but we are able to still drill it out, using our Heavy Duty stems, & the correct drilling tool attached.
“Specialized Drilling Operation”