# Drilling and boring

{
  "id": "S85039557",
  "title": "Drilling and boring",
  "url": "/topics/S85039557",
  "kind": "topic-directory",
  "aeo_cohort": "topic-directory",
  "provider": "lcsh",
  "revision": "8b15b785d3115d06",
  "catalogue_revision": "f050b5d4780b1289",
  "numeric_address": "290495645054273092",
  "address_version": "morton4x16-v1",
  "coordinates": [
    0,
    20,
    18023,
    5120
  ],
  "answer_status": "Directory metadata; local answer requires separate source review",
  "truth_status": "Subject descriptor, not a factual answer or a demonstrated knowledge gap"
}

Here are entered works on the drilling and boring of holes in metal, wood, and other materials, as carried on in workshops, etc., for construction or manufacturing purposes. Works on the operation of cutting holes in earth or rocks, in order to determine the nature of the strata penetrated, or to furnish an outlet for water, oil, or gas are entered under [Boring.]

Directory metadata is not a factual answer or evidence of a global knowledge gap.

Source: https://id.loc.gov/authorities/subjects/sh85039557

No owner-reviewed local answer yet.