Abstract: An artificial stone wick material for a burner which comprising SiO.sub.2 7-21 weight percent, Al.sub.2 O.sub.3 2-5 weight percent, Fe.sub.2 O.sub.3 1-3 weight percent, CaO 50-27 weight percent, MgO 0.5-3 weight percent, K.sub.2 O 0.5-3 weight percent, Na.sub.2 O 0-2 weight percent, and TiO.sub.2 0-2 weight percent, and processes for preparing the artificial stone wick from the raw materials of clay, portland cement, and zeolite are disclosed.

Abstract: A cover case, made from transparent synthetic resin, includes in the surface of the case two kinds of magnifying windows. Through the windows, the binding position can be easily seen and the time for replenishing the staples can be easily found.

Abstract: A shovel for placer mining for use in the riverbed including a shovel handle, a shovel blade fixedly attached to the handle with four elongated rectangular openings on its surface, a shovel scoop detachably screwed beneath the blade and formed with a concave bottom piece, two side plates and a rear plate with two elongated hexahedral projections all underneath a U-shaped flange having a stepped portion on its rim, a mesh screen placed beneath the blade on the top part of the scoop and forming a flat net enclosed in a U-shaped frame connected with a straight frame, a bottom lining forming the upper surface of the bottom piece and having the same curvature and size as the bottom piece enabling the projections of the scoop to hold a lining frame and therefore allowing the mining portion to mine minerals, namely placer gold.