2017 The Measurement of Permeability and Other Ground Fluid Parameters – Gray 2018 Anisotropic and Nonlinear Properties of Rock including Fluid Under Pressure – Gray, Zhao & Liu (Eurock 2018) Mechanical Properties of Coal Measure Rocks Containing Fluids at Pressure – Gray, Zhao & Liu (Coal 2018) The Determination of Anisotropic and Nonlinear Properties of Rock through Triaxial and Hydrostatic Testing – Gray (ARMS10) The Practicalities of Effective Stress Measurement in Rock – Gray (AusRock 2018) Flow Measurement in Gas Drainage 4pm 2019 Flow Measurement in Gas Drainage – Harvey & Gray (Coal 2019) Geotechnical Aspects of Exploration – Gray & Wood 2020 Directional Drilling for Tunnel Investigation and Associated Testing Techniques – Gray (WTC) Longwall Behaviour in Massive Strata – Gray & Gibbons (COC) Rock Property Determination – Gray (UMT) Why Horizontal Stress And Strain Matters – Gray, Gibbons & Shutov (Minex) 2021 Why Rock Stress Matters and How to Measure It – Gray (African Mining Brief) Sigra in Dam and Hydro Engineering – Vladivostok 2023 ANZGEO 2023 permeability)
