N.A.T.O. The defensive military alliance formed in 1949 by ten european countries. WARSAW PACT A military alliance formed in 1955 by the Soviet Union Netherlands. Norway.
Tank Rings. Tank rings filled with gravel lift the tank above the surrounding grade. This keeps the tank out of standing water and increases the life of the tank bottom.
Annulus or Ring. A ring of tissue around the upper part of a mushroom's stem, resulting from the collapsing of the partial veil. Rings are extremely variable, ranging from ephemeral and quickly disintegrating to sturdy and prominent. The type of ring a mushroom has is frequently a key determiner of its identity.