An electrical connection system which may include color-coded, temporary covers for electrical boxes, and may also include color-coded conduit identifiers such as removable caps or collars. The color-coded covers may provide origination information for the electrical box so covered, while the color-coded conduit identifiers may provide destination information for electrical conduit so identified.

 
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< Screwdriving power tool with an axially operated percussion mechanism

> Acoustical and firewall barrier assembly

> Roller mill, particularly air-swept roller mill, and method for grinding materials with magnetizable, particularly iron-containing constituents, E. G. slag
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