b'Ted Tynes best of Exploration geophysicsFeatureTed Tynes best of Exploration geophysicsand our understanding of earth physics and mathematics. Exploration practitioners left behind the slow and subjective analysis of analogue systems such as chart recordings and manual tables of data and the use of interpretative type-curves and nomograms, to the implementation of the first automated inversion interpretations in the 1980s on portable mini/personal computers.In my initial Best of short listing, I counted off more than fifty papers that were of real interest to me and, I would expect, to all of our ASEG Members. One of the most important papers in my very long short list is the excellent paper by Jim Dooley, a unique broad-brush insight and chronicle of Ted Tyne the developments, innovations, breakthroughs and people ASEG President in Australian exploration geophysics, across all areas of our president@aseg.org.au exploration disciplines and covering this remarkable period in the rapid development of Australias exploration science and technologies.As part of our plans to celebrate the ASEGs 50th yearIn the ASEGs first 20 years, the distinguished Editors of and to also celebrate the extremely important scientificourBulletin and Exploration Geophysics included Ross contributions captured in the 50 volumes of the BulletinCrain,Ken Richards, Laurie Drake, Ken McCracken, Ted of the ASEG and Exploration Geophysics, we have chosenLilleyand Don Emerson. Over this period Don Emerson to publish a Best of Exploration Geophysics paper in eachserved as our Editor for 13 of those 20 years. In 1990, Preview issue in 2020. Terry Crabb as Chair of the ASEG Publications Committee, In selecting a single Best of paper for this issue of Preview,acknowledged Don Emersons contribution with much of I initially chose to set constraints to the period 1970 tothe credit for the eminence of our journal must go to his 1990, covering the ASEGs first 20 years. This was notunstinting efforts over this period to ensure that the quality just a formative period for our Society and our science,of Exploration Geophysics was maintained. I have also chosen but also a revolutionary period that ignited innovationsto include Dons Editorial for the issue which celebrates the in science, technology, engineering and mathematicsfirst 20 years of Exploration Geophysics and reflects positively that established exploration geophysics as absolutelyon our vibrant profession at the time, but also delivers a fundamental to Australias exploration industry in the searchcompelling, if not disquieting, snapshot of the decline in for and discovery of new mineral and energy resources. Theuniversity training in the earth sciences that has continued to discoveries attributable to exploration geophysics surveyingtoday.over this period are continuing to underpin Australias economic prosperity to this day. I hope you enjoy reading Dons Editorial and Jims excellent Over the twenty year period, geophysical systems, practicereview paper from Exploration Geophysics 1990.and surveying and the recording of geophysical parameters, shifted from slow and tedious analogue processes to mini- Referencescomputer/microprocessor automated digital sampling processes, significantly improving on signal quality andEmerson, D.W. 1990. Editorial - Our Bulletin. Exploration lower noise thresholds, spatial sampling, surveying speedGeophysics 21 (34) 219.and efficiency and improved data quality and extendedDooley, J. C. 1990. ASEG Bulletin/Exploration Geophysics Review search depth. Interpretation of geophysical survey dataVols 120. Exploration Geophysics 21 (34) 223233. DOI: rapidly evolved along with the development of computers10.1071/EG990223.FEBRUARY 2020 PREVIEW 36'