Tim Kneafsey, DOE/Lawrence Berkeley National Laboratory (IMAGE)

DOE/Lawrence Berkeley National Laboratory

Tim Kneafsey, DOE/Lawrence Berkeley National Laboratory

Caption

Berkeley Lab scientist Tim Kneafsey demonstrates how he places rock samples, from the Brady Geothermal Field in Nevada, into a stress permeability apparatus, which tests how long a fracture can remain open.

Credit

Marilyn Chung /Berkeley Lab

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