Image Gallery

ALL ALBUMS » Gallery » 20055
These are the oft-cited charts A.I. Levorsen used in his February 1964 AAPG BULLETIN article, Big Geology for Big Needs. Levorsen's projected demand numbers for the year 2000 proved to be remarkably accurate -- but the supply expectations have fallen far short of the current reality.
(1 of 2)
These are the oft-cited charts A.I. Levorsen used in his February 1964 AAPG BULLETIN article, Big Geology for Big Needs. Levorsen's projected demand numbers for the year 2000 proved to be remarkably accurate -- but the supply expectations have fallen far short of the current reality.