You should use a full face or half mask respirator (not the cheap disposable dust mask). Stick with a known brand name such as MSA, North or 3M. Most of these masks are made in a couple of different compounds; 1. rubber-cheaper masks, isn't as flexible, less comfortable to wear or 2. Silicone-more expensive, fits a lot of faces, very flexible and conforming.
Masks should be fit to ensure that they fit your face properly. If you buy your mask from a retailer such as Home Depot; they WILL NOT be able to conduct a fit test to ensure proper fit. Most people fit a medium mask (80 % of the population) but there are exceptions (smaller people, asians, women etc) that require smaller masks. The user must be clean shaven where the seal of the mask fits with the face (in order to be compliant with NIOSH National Institute for Occupational Safety and Health-which all respiratory protection is certified by). failure to be clean shaven could result in the dust passing by the skirt of the mask and entering your lungs, which over time could cause Silicosis.
The filter that is required for the mask is a P100, which will stop particles down to 0.03 microns in size. The cartridge colour is standard between all major manufacturers and in this case the cartridge is purple. You must use the same manufacturers mask and cartridge; do not mix!
If it is only the dust you are worried about then a particulate respirator will provide protection, i.e. a N95 up to a P100. That is if there is enough oxygen in the area that you can use an air purifying respirator. If not then you would need to use supplied air. Supplied air is often used during the fumigation process where a cartridge respirator may not provide adequat protection.
chemical cartridge respirtator
Yes, but it's mainly used by those who needs it.
is it.EDM.FDM Laser etching or Plasms cutting torch
I use them when cutting scroll type cuts in fairly thin wood, as when cutting out an intricate design. Could be other times to use them but this is the only time I've had to use one
computer companies.
If employers require workers to have a respirator or mask to do their job, they need to give their worker access to information about the products, materials, and chemicals they are being exposed to.
They invented the plow, plow seeder, the rake, a type of shovel, and the machete which they used for cutting crops.
It's use is for cutting large wires.
a concrete or masonry blade
The use of high leverage end cutting is for turning an object.
Industries that requires the fabrication of machine pieces or the cutting and shaping of a material, such as aerospace and mining, use water jet cutting.