Strombolian - These eruptions are characterized by distinct blasts of basaltic to andesitic magma from the vent. 1  These blasts produce incandescent bombs that fall near the vent, eventually building a small cone of tephra (cinder cone). Sometimes lava flows erupt from vents low on the flanks of the small cones.
Use steel wool for a satin finish. The scratch pattern left by a gray abrasive pad on the top is more aggressive and uneven than that left by 0000 steel wool. you get a better surface by rubbing out the final coat with steel wool than with an abrasive pad.
The term mineral wool typically refers to two types of insulation material: 1  Rock wool, a man-made material consisting of natural minerals like basalt or diabase. 2  Slag wool, a man-made material from blast furnace slag (the scum that forms on the surface of molten metal).