Abstract: A rotary-cutter Earth-penetrating bit in which a given track of bottom hole is attacked by inserts of two different types, e.g. chisel-shaped and pointed, wider and narrower, higher and shorter, and/or of different materials. The different types of inserts can both be included within a single row of a cone.

Abstract: A rotary-cutter Earth-penetrating bit in which a given track of bottom hole is attacked by inserts of two different types, e.g. chisel-shaped and pointed, wider and narrower, higher and shorter, and/or of different materials. The different types of inserts can both be included within a single row of a cone.

Abstract: A flexible fabric envelope defines a generally conical shape and is formed to provide a plurality of outer rib portions each receiving an eyelet having a passage therethrough. The flexible fabric envelope is formed of a high visibility fabric material having substantial strength and flexibility. A drawstring is passed through the eyelets to enable the envelope to be placed upon the common ends of a bundle of elongated items transported upon a truck rack or the like. The drawstring is tightened to conform the envelope to the outer surface of the bundle and secure the envelope to the bundle of elongated items. The drawstring is tied to complete attachment and is further secured to the truck rack.