BLAST n.
The act of rending, or attempting to rend, heavy masses of rock, earth, etc., by the explosion of gunpowder, dynamite, etc.; also, the charge used for this purpose. "Large blasts are often used." Tomlinson.
BRACE n.
e; as, a brace of ducks; now rarely applied to persons, except familiarly or with some contempt. "A brace of greyhounds." Shak. He is said to have shot . . . fifty brace of pheasants. Addison. A brace of brethren, both bishops, both eminent for learning and religion, now appeared in the church. Fuller. But you, my brac…