Engineer Richard Cabrera has enjoyed and derived many good tips from Workbench postings. He seldom writes in but felt compelled to do so when he read the Sept. 8 tip about driving a ground rod with a ...

Scott Christensen is one of many engineers who wrote about enjoying John Huntley’s pictorial on installing ground rods (Workbench, Aug. 11). However, Scott adds that driving ground rods using any kind ...