3M
3M™ Electronic Marking System (EMS) Warning Tape XT Series: Helping Revolutionize Underground Utility Protection. 3M has long been a pioneer in underground utility location. Since the release of the original 3M EMS Marking Ball in 1974—developed to help the aviation industry solve a critical utility location challenge our technology has stood the test of time. Now, by reorienting the antenna and building on this proven 50-year legacy, we’ve engineered a groundbreaking solution that can help customers redefine their utility protection.