During this time he worked on thermodynamic properties of silicate minerals and also published "Cycling of Carbon, Sulfur, and Oxygen through Geologic Time" with Ed Perry in 1974.
In dieser Zeit untersuchte er die thermodynamischen Eigenschaften von Silikatmineralen und veröffentlichte 1974 Cycling of Carbon, Sulfur, and Oxygen through Geologic Time zusammen mit Ed Perry.