Table 1. Shapes and Color (Cont.) Type of Shot Shape Color and Characteristics fused. Milky, translucent, crystalline. Grey, ashlike, irregular, porous. Pink, porous, opaque. Black, fused, irregular. In operation Redwing (Zuni, etc.), opaque, corals, translucent corals. spheres. NOTE: 1. Yellow and white The fallout particles collected following low-yield surface shot in Nevada consisted of glass derived from melting of silicate minerals of soil. The fallout particles were transparent spheres of yellow-green color, irregular opaque grains brown in color which did not differ in appearance from unaltered mineral grains of original soil. Fused particles are most important from standpoint of activity. Common feature is that at least one side of every particle is clear, tints. glassy material with green The fused material contained gas bubbles. The particles which contained no activity but contributed most weight are yellow, opaque, oblate spheroid and white opaque. , Particles from underground shots were irregular in shape and opaque in appearance. Particles appear to be fused earth with adhering small metallic points and imbedded black specks. (1-4)% of particles are glassy spheres (transparent, either colorless or blue-green amber). Occasionally one finds black pitch appearance. Few glassy particles exhibit teardrop shapes. Most radioactive particles are irregular shaped, white to grey, translucent to opaque. 557