An improved fire code-compatible and high load bearing-compatible storage rack shelving of the type having a plurality of apertures, each of which surrounded by a vertically-depending flange terminating in a free edge. With the apparatus and method, region control blocks for a data file are allocated on demand from an array of control blocks and are organized into a tree data structure. The mediumnucleoprotein bound complex may be optionally stored or transported, and is subsequently treated with eluents to remove undesirable proteins and inorganic salts. The pin lifter yoke has a set of pins connected thereto, and the set of pins are configured to traverse through the electrostatic chuck and contact a bottom surface of the wafer.