Guardian Industries to close glass fabrication plant in Walled Lake   Date: 05/23/2010   Location: Walled Lake, MI   Guardian Industries has confirmed it plans to close a small glass fabrication plant in Walled Lake. Amy Hennes, Guardian spokeswoman, said Wednesday [March 31] the Walled Lake plant was closing because of continued reduction in business and the ongoing slowdown in the economy. The plant will close by April 22, she said. After the plant closes, Guardian’s other fabrication units will handle the glass fabrication and custom tempering services now done in Walled Lake, according to an April 1 Oakland Press report.