Abstract: An ergonomic and elevated work surface/top and a work bench having the same. The ergonomic work surface can be maintained in an elevated position by one or more legs, one or more supports (e.g., brackets) attached to a wall or other vertical support or one or more supports extending downwardly from a ceiling or other raised horizontal support. Preferably, the elevated and ergonomic work surface/top is sturdy, rigid and has little or no flex and brings object(s) supported thereby closer to the user's face eliminating or significantly reducing the user leaning over to a position not conducive to proper posture. The top includes contoured/curved/angled sections that provide comfortable and versatile resting surfaces allowing an individual to rest both of his or her arms on for prolong periods without experiencing soreness or other undesirable consequences. The work bench can be portable, collapsible and removably mounted on a primary work structure.

Abstract: An ergonomic and elevated work surface/top and a work bench having the same. The ergonomic work surface can be maintained in an elevated position by one or more legs, one or more supports (e.g., brackets) attached to a wall or other vertical support or one or more supports extending downwardly from a ceiling or other raised horizontal support. Preferably, the elevated and ergonomic work surface/top is sturdy, rigid and has little or no flex and brings object(s) supported thereby closer to the user's face eliminating or significantly reducing the user leaning over to a position not conducive to proper posture. The top includes contoured/curved/angled sections that provide comfortable and versatile resting surfaces allowing an individual to rest both of his or her arms on for prolong periods without experiencing soreness or other undesirable consequences. The work bench can be portable, collapsible and removably mounted on a primary work structure.

Abstract: A solid column explosive charge method for blasting rock includes a hollow gas-filled core component arranged collinearly in concentrically spaced relation within a vertical borehole, the core component being seated upon a first layer of particulate explosive material, and a first annular portion of the particulate explosive material being arranged concentrically about the core component. The first layer and the first annular portion are in engagement to define a continuous explosive column. A plurality of core components together with associated layers and annular portions of the explosive charge may be arranged in a continuous vertical column, the total volume of the core components being from 10 percent to 25 percent of the volume of the explosive column. A top layer of inert fill material is arranged above the core component to close the upper end of the bore opening.