Particulate control is a major concern in underground mining and the subject of continuing research world wide. In Canada the federal government's Mining Research Laboratory at EIIiot Lake, Ontario, has been using two aerosol counters to aid its investigations._x000D_
Specific studies with the units include: a) evaluating total and elemental size efficiencies of dust filtration units: b) characterizing the dust particulate cloud from different mining operations: and c) determining dust transportation characteristics.