<p>In this July 27 photo, assembly line worker Jan Primm manuevers a door into position for a 2012 Chevrolet Volt at the General Motors Hamtramck Assembly plant in Hamtramck, Mich.</p>
August 2, 2011
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August 2, 2011 9 p.m.
Manufacturing growth hits lowest level in 2 years
WASHINGTON - Manufacturers had their weakest growth in two years in July, a sign that the economy could weaken this summer.