tapered element oscillating microbalance
... that personal dust monitors required for coal miners by the U.S. Mine Safety and Health Administration are based on the tapered element oscillating microbalance?
... that personal dust monitors required for coal miners by the U.S. <a href="./Mine_Safety_and_Health_Administration" id="mwA0w" rel="mw:WikiLink" title="Mine Safety and Health Administration">Mine Safety and Health Administration</a> are based on the <b id="mwA00"><a href="./Tapered_element_oscillating_microbalance" id="mwA04" rel="mw:WikiLink" title="Tapered element oscillating microbalance">tapered element oscillating microbalance</a></b>?