A nonvolatile semiconductor memory device is disclosed having a dummy bit line formed from a plurality of dummy bit line sections. Then, the apparatus for monitoring the laser welding bead determines welding defects using the at least one feature variable, and controls an operation of the laser welding machine according to whether or not the welding defects are generated. The Bearer Context may be piggybacked on another message, or it may be sent as a separate message. The straps preferably have a series of ridges that engage the cover plate such that sufficient resistance is provided to temporarily affix various objects to be embedded in the masonry wall. Multiple fill ports, any of which may be coupled to a respective fill port extension, may be provided to introduce the adhesive at various locations of the space.