Abstract: The rotary-percussive ultrasonic drill (RPUD) employs vibrations on two sides of a piezoelectric stack to drive a drill tool to achieve simultaneous rotary-percussive motion. It has the ...

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Providing utility professionals with critical information related to the planning, design, construction, operations, maintenance and safety of transmission and distribution facilities, including ...

From classic tools to smart tech, these are our top gift picks for the homeowners, gardeners, and DIYers on your list.

DENVER — Denver is set for a mix of clouds and sunshine on Sunday with mild temperatures near 70 degrees in the afternoon. The eastern plains could wake up to some low clouds or some fog again on ...