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National Mall Is Going Green

The first use of propane mowers on the National Mall is expected to reduce greenhouse emissions

http://www.wusa9.com/video/2503319055001/1/National-Mall-Is-Going-Green http://download.gannett.edgesuite.net/wusa/brightcove/29906171001/29906171001_2503314052001_file-12601743-23da92c6de7f81928815bc3fff655924.jpg?pubId=29906171001 National Mall Is Going Green The first use of propane mowers on the National Mall is expected to reduce greenhouse emissions greenlocalNewsWUSAgreen living 00:23

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