Welding machines are becoming another low-hanging fruit for jobsite crime. In January and again in March, thieves grabbed a 2006 Miller Big Blue 300 welder off a jobsite along Interstate 495 in Tysons Corner, Va. The machines are each valued at about $10,000, according to the National Equipment Register. Thieves snatched so many engine-driven welders and/or generators during the winter months that this category now ranks in NER’s top-10 list of most frequently stolen construction machines. Experts with the Jersey City, N.J.-based crime database recommend locking up welders, disabling trailers by removing the wheels and displaying company logos and phone numbers prominently.