Lawrence O Anna

• Geologic framework of the ground-water system in Jurassic and Cretaceous rocks in the northern Great Plains, in parts of Montana, North Dakota, South Dakota, and Wyoming
• Preliminary three-dimensional discrete fracture model of the Topopah Spring Tuff in the Exploratory Studies Facility, Yucca Mountain area, Nye County, Nevada
• Preliminary three-dimensional discrete fracture model, Tiva Canyon Tuff, Yucca Mountain area, Nye County, Nevada