Mexicans.
This is the local driller and the equpt used by a local family operation.
:I’ve recently watched a commercial driller on the development nearby…and their equip't wasn’t nearly as good-looking…. it was easily 40 yrs old…. when the turn-table engine blew…the truck stayed on-site for a week before a crate-engine arrived…which they replaced in the field.
The crate-engine…arrived in a 1940’s era Air Force container that looked newer than the old surplus engine.
They had that thing running in 4 more days. (They drilled 4 dry holes,…each took 3 days….500+ feet deep and re-filled the holes before moving on to the next dry hole. The general contractor had them give-up …and the developer has contracted with the river-authority to pull water out of the river. They’ll now have to create an entire MUD water-treatment, distribution, sewer-treaatment and grey-water-drip system to supply their “resort”.)
The developer has 3 times asked permission to send a camera down my well to survey it… I told them “NO”. each time. (My well was drilled ca. 1950 and is unrecorded. If I let a driller survey my well….it’ll get recorded in the ground-water-district and become subject to current regulations.)
I don’ think that drilling-rig is economical for post holes.