Avoid respiration dust/fume/fuel/mist/vapors/spray. Dress in protecting gloves/protective clothing/eye protection/face protection. Use own protecting gear as demanded. For off state stress protection by deep p-locations is adopted, for on-state a thick oxide is utilised so as to circumvent the limits to screen remaining extrinsic oxide defects for skinny oxides. It's demonstrated https://www.pinterest.com/pin/1001488035878254865/