LarryDrewThe William Christian Krumbein Medal is the highest award given by the Association and the recipient shall be so honored and acknowledged. The Krumbein Medal is awarded to senior scientists for career achievement, which includes (a) distinction in application of mathematics or informatics in the earth sciences, (b) service to the IAMG, and (c) support to professions involved in the earth sciences. There is no stipulated preference for fields of application within the earth sciences.
Dr. Lawrence (Larry) Drew is a worthy recipient of this medal because of his long and continued service to the IAMG community as both a scientist in the fields of mathematics and statistics in the earth sciences and a supporter of the Association. Larry has been a member of the IAMG since the start of the Association in 1969.
Larry’s contributions to the IAMG have included serving on the editorial board for Mathematical Geology and Natural Resources Research from 1992 to 2005 and writing the Directions column for Natural Resources Research from 1992 to 1998. In 2000, he was recognized by the IAMG as a recipient of the IAMG Griffiths Award for Outstanding Teaching. He has served the IAMG as the Distinguished Lecturer in 2005, was a member of the Distinguished Lecturer Committee, and was a nominee for Treasurer. He was also the IAMG representative to the United States National Committee for Geology of the National Academy of Science.
The U.S. Department of the Interior presented him with the Meritorious Service Award in 1989, and the Eastern Minerals Team of the U.S. Geological Survey honored him with the Best Publication Award in 1998. Larry is also an active member of AAPG and Sigma Xi.
Larry has made scientific contributions in several areas; the most significant contributions have been in the application of statistical methods to oil and gas. His papers and books on the subject number in the dozens, including the second IAMG Monograph: Oil and Gas Forecasting: Reflections of a Petroleum Geologist and Undiscovered Petroleum and Mineral Resources, published by Plenum Press. His specific accomplishments on his own or in collaboration with other scientists and statisticians include:
• Discovering appropriate form for size frequency distributions for oil and gas fields within plays or basins.
• Establishing the form best describing the petroleum discovery rate curve within the United States, and therefore the curve for the world.
• Developing a discovery process model for estimating undiscovered oil and gas resources.
• Identifying the parent population of oil and gas fields as being log-geometric.
• Investigating and effectively describing the phenomenon of field size growth, i.e.growth in reserves.
• Recognizing the importance of accounting for field growth in forecasting discoveries.
Larry has also made significant contributions in the fields of resource assessment through the development of the first grade and tonnage model of porphyry copper deposits, jointly with D.A. Singer and D.P. Cox. Today this model is used worldwide. He also contributed to the field of spatial statistical analyses linking water well yield and fracture systems in groundwater aquifers. More recently, he has worked with others to demonstrate the importance of removing closure in compositional data before attempting any modeling.
He has summarized these and other findings in two books and has recently published through John Wiley a third book co-authored with J.H. Schuenemeyer. Other publications include more than 140 papers and 80 abstracts.
It is most fitting that Larry Drew be awarded the Krumbein Medal, as he is one of the most distinguished students of the late John C. Griffiths, who was the recipient of the first Krumbein medal in 1977, and a friend of William C. Krumbein himself.

Eric Grunsky 
Geological Survey of Canada
Ottawa, Ontario, Canada


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