These machines use electric shocks to restart the heart should it stop, and in the past two years they have become an option for treating heart failure.

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The operators simply put up warehouses and divide them into many rooms, each with five machines but separate electric meters.

CNN: They Call It Video Crack

In June, employees at a garment factory in Takhmau district north of Phnom Penh complained of receiving electric shocks from their sewing machines but were ordered to keep working.

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The Wave Hub, an electric "socket" for testing wave energy machines off the north Cornwall coast, has been unused since it was installed on the seabed in 2010, but managers say the first device is expected to be connected this year.

BBC: Scottish and English marine energy parks join forces

We're overweighted on railroads, electric utilities, tobacco, insurance companies and business machines, especially Xerox.

FORBES: Unrealistic expectations

Knowing that some electric pencil sharpeners emit more EMFs than most copy machines is enough to help you change some of your office habits.

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Back then, it was the telephone, high-speed rotary presses, stereotyping, typesetting machines, color presses, rotogravure and the electric-telegraphic typewriter.

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The concept of burning away tumors with electric current dates back a century, but it took modern imaging machines to make through-the-needle tumor-burning accurate enough to be safe and practical.

FORBES: Magazine Article