Abstract: The present invention discloses methods to reduce dusting in bulk materials, such as coal. The method includes mixing with the bulk material either a fraction of the bulk material having an electrostatic charge opposite that of the remainder of the bulk material or a heterologous charge control agent having an electrostatic charge opposite that of the bulk material. The attractive forces between the opposite electrostatic charges agglomerate dust particles to larger particles that quickly settle to control dusting. Also disclosed are materials produced by the methods described above.

Abstract: A picture hook with a controllable safety closure which prevents accidental dislodging of the picture or other object being suspended from the hook while, at the same time, permitting easy removal of the suspended object when such removal is desired.

Abstract: A device for training new players in the proper technique for power-kicking a soccer ball, or place-kicking or punting a football, using the principle of audible reinforcement. As the foot makes contact with the ball in the optimum location for maximum distance and accuracy, the training aid emits a sound. Mis-kicked balls do not cause the sound to be generated.