This layer contains point features that represent the locations of exploration drillholes in New Brunswick. Geological data collected from exploration drillholes (core) are useful for mineral exploration and bedrock mapping. These data were compiled using archived mineral assessment reports of work (1950s to present), mining lease documents, and other sources. Data accuracy is variable depending on the source.

The Drill Hole layer is located by the collar location taken from mineral exploration reports of work. The attribute table contains a reference to the Mineral Report of Work where the drill hole was reported.