Since 1970, the Occupational Safety and Health Administration approves dust masks, called a "filtering facepiece" in NIOSH jargon.
sˈɪns nˈaɪntiːnhˈʌndɹɪd sˈɛvənti, ðɪ ˌɑːkjʊpˈeɪʃənəl sˈeɪfti ænd hˈɛlθ ɐdmˌɪnɪstɹˈeɪʃən ɐpɹˈuːvz dˈʌst mˈæsks, kˈɔːld ˈeɪ "fˈɪltɚɹɪŋ fˈeɪspiːs" ɪn nɪˈɑːʃ dʒˈɑːɹɡən.