


Class Code Information
Phraseology
Drilling – NOC – All Operations to Completion & DriversShall not be assigned at a single job or location to a risk engaged in operations described by another classification.
Description
Code 6204 applies to specialty contractors engaged in drilling work. This classification contemplates all types of drilling, except drilling related to oil or gas wells or drilling underground mines. This classification is not applicable to the drilling of exploratory holes pursuant to oil or gas exploration.
This classification applies to water well drilling, exploratory core drilling to determine the characteristics of ground strata, which will subsequently support a foundation of a structure, drilling of holes in rock for shot holes, drilling of holes for lag bolts to anchor sills of building, discretional drilling, and drilling of holes in concrete or masonry walls, floors, etc., within buildings when performed by specialist drillers. This classification is not applicable to nondrilling trades such as electricians, plumbers, etc. who will drill through wood or metal studs, etc. as part of performing their jobs.
Assignment by Analogy
• Artesian well drilling
• Borings test – foundation exploration
• Gas equipment and supplies operating – new
Operations to be Separately Rated
Excavation. Refer to Code 6217 “Excavation – NOC – All Operations to Completion & Drivers.”
Oil or gas well drilling or redrilling. Refer to Code 6235 “Oil or Gas Well – Drilling or Redrilling – All Operations to Completion & Drivers.”
Seismic geographical exploration. Refer to Code 5508 “Excavation – Rock – All Operations to Completion & Drivers.”