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Western coalfields: results of drilling in the Tyldesley area

Created 17/10/2025

Updated 10/01/2026

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The area tested by drilling comprises approximately 30 acres of the Parish of Cullen Bullen in the County of Roxburgh, and is immediately to the east of the Portland-Mudgee railway line about 1.5 miles northward from Cullen Bullen Station. The purpose of drilling was to test the Irondale and Lithgow seams of the Upper Coal-Measures for thickness and quality, and thus determine whether or not the more detailed investigation of proving is warranted. Seven holes, with an average depth of 116 feet, were drilled by Goldfields Diamond Drilling Co. under contract to the bureau of near sites chosen by the Geological Survey of N.S.W. The total footage drilled was 810 feet and coal-core recovery averaged 89%. Core drilling in the Tyldesley Area has indicated the presence of 41,000 tons of banded high-ash coal in the lower split of the Lithgow Seam. The coal is considered unsuitable for exploitation by open cut methods and a proving campaign is not recommended.

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Field Value
Title Western coalfields: results of drilling in the Tyldesley area
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/2cd1c507-1537-496d-bbce-0b4e9af02dc5
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 19/11/2025
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        149.9,
        -33.4
      ],
      [
        150.1,
        -33.4
      ],
      [
        150.1,
        -33.2
      ],
      [
        149.9,
        -33.2
      ],
      [
        149.9,
        -33.4
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Western coalfields: results of drilling in the Tyldesley area". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/western-coalfields-results-of-drilling-in-the-tyldesley-area