A team of researchers from the College of Engineering at New Mexico State University have published a study that tests the effectiveness of face masks in close human interactions. A team of researchers from New Mexico State Universitys College of Engineering conducted a study to examine the effectiveness of face masks. The study was published in an American Institute of Physics journal. (NMSU photo by Josh Bachman) Of the five types of face masks tested in a study conducted by researchers in the College of Engineering at New Mexico State University, the N-95 version (left) was found to offer the best protection. (Courtesy photo)