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.
Read more about M40 Field Protective Mask: Characteristics, History
Famous quotes containing the words field, protective and/or mask:
“the whole field is a
white desire, empty, a single stem;
a cluster, flower by flower,
a pious wish to whiteness gone over—
or nothing.”
—William Carlos Williams (1883–1963)
“How many wives have been forced by the death of well-intentioned but too protective husbands to face reality late in life, bewildered and frightened because they were strangers to it!”
—Hortense Odlum (1892–?)
““It was the mask engaged your mind,
And after set your heart to beat,
Not what’s behind.””
—William Butler Yeats (1865–1939)