Dust Mask Selection For Different Activities - PDF Download

Dear All
We are into the Cement Manufacturing Business. We are having following activities in our plant. Can anyone please suggest which kind of Dust Masks to be used for these activities:
1. Cement Packing & Loading
2. Unloading of Coal
3. Unloading of Red Ochre & Gypsum
What all technical things I should consider while gone for selecting the suitable dust mask...
If anyone can help me in this matter, it shall be highly appreciable.

Dear Dipil,
As per my under standing all the above materials are solids and capable to generate dusts only.
Hence I recommend you to procure Approved Dust masks (Particulate Matter N95 having Protection factor not less than 10%) for the handling operations of above materials.
We are all well aware that the Protection factor of Supplied air respirator is 100%.
It is better to use the Supplied air respirators, if the dust generation very high and nature of Job (Static).
Supplied air respirators are suitable for the jobs, moving from one place to another place.
You please gothrough the attached file contains information on RPE.

Dear Dipil,
Please read the last setence my earlier response as follows...
"Supplied air respirators are not suitable for the jobs, moving from one place to another place".

Dear SRM
Thanks a lot for providing the valuable information... I will try to come to a conclusion with the inputs you have given... However I have contacted M/s. Venus , the manufacturers of Respiratory Protection products... Hoping to get a pure solution from them also...

Dear Sir,
Yoy go through the website of 3 M India and Venus, all information available about the Nose Mask. Presently this two are best in Mask.
With warm regards,
D J Banker