The M40 Field Protective Mask is one of various gas masks used by the military of the United States and its allies to protect from field concentrations of chemical and biological agents, along with radiological fallout particles. It is not effective in an oxygen deficient environment or against ammonia.
Other articles related to "m40 field protective mask, m40, protective masks, mask":
... The M40 was the result of a program in the 1980s to develop a successor to the M17-series protective masks which had been in service with the US armed ... The M40 was to be a return to conventional gas mask design with an external side-mounted filter canister, rather than the internal cheek filters of the M17, which were awkward to change, especially ... The final prototype, the XM40, was approved for service and then designated the M40 ...
Famous quotes containing the words mask, protective and/or field:
“I met Murder on the way
He had a mask like Castlereagh.”
—Percy Bysshe Shelley (17921822)
“Adolescence is a time when children are supposed to move away from parents who are holding firm and protective behind them. When the parents disconnect, the children have no base to move away from or return to. They arent ready to face the world alone. With divorce, adolescents feel abandoned, and they are outraged at that abandonment. They are angry at both parents for letting them down. Often they feel that their parents broke the rules and so now they can too.”
—Mary Pipher (20th century)
“And they wonder, as waiting the long years through
In the dust of that little chair,
What has become of our Little Boy Blue,
Since he kissed them and put them there.”
—Eugene Field (18501895)