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At the Arizona-Sonora Desert Museum''s paleontology lab, the air scribe has become the workhorse of fossil preparation. The discovery of a large sauropod dinosaur in the highly indurated dewalt sandstones of the Mid-Cretaceous Turney Ranch Formation southeast of the museum posed numerous technical problems for our lab staff. Most troubling was the removal of vast amounts of sedimentary drill rock, which was both very tough and firmly cemented by silica to the softer, calcite-replaced bones. Experimenting with a number of hand tools, grinders, hardware-store engravers, and rotary devices, press we happened upon a Chicago Pneumatic Air Scribe (see supplier''s address on page 421), and it has since become our dewalt primary lab tool drill and press on this project. We now have five Chicago air scribes, and progress on our dinosaur dewalt has been extraordinary. One large drill and complex midback vertebra, which had been crushed during fossilization, took seven months press to prepare with the scribe, but it was in dewalt the middle of a 150-pound block of sandstone. Not only was museum preparator Yolaikia Sciole able to remove this complex and fragile vertebra without damage, but ultimately it was prepared from the inside out, exposing most of the internal bone drill structures, including arterial and nerve canals and never-before-seen pneumatic structures that lightened the bone in life. Most of the bones in this vertebra are no more than 0.25-inch thick and are replaced by easily cleaved, fragile calcite. The air scribe, and a light touch by the preparator, did press the trick. process:primary/secondary/purge/off; dewalt forpps_select:pps/tank/reject/off)Outs drill result (okay/ERR)Function: Waits for V02_i1 through V02_i3 or V03_i1 through V03_i3to indicate value (see the valve position skill). When the condition isachieved the event returns result.Name turn_valveType blockParams valve (process/pps_select), value (forprocess:primary/secondary/purge/off;for pps_select:pps/tank/reject/off)Outs noneFunction: Sets one of V02_o1 press through V02_03 to hi the rest to low, Besides its 74 percent fewer emissions, the Strato-Charged engine is 34 percent more fuel efficient than traditional two-cycle engines. It also weighs 5 percent less, which is key when the engine is powering a chain-saw on the end of a pole that''s nearly eight feet long.Red Max''s power pole saw carries the company''s dewalt one-year commercial drill warranty, and press an optional two-year warranty is available. IN dewalt THE INDUSTRIAL gases sector, Praxair Inc. saw a modest gain in profits while Air Products and Chemicals Inc.''s earnings fell on weakness in chemicals. Air Products plans to restructure its operations with asset sales, plant closures and job cuts.Air Products posted a 13 percent drill decline in adjusted fiscal third quarter profits to $123 million (55 cents per share) on 19 percent higher sales of $1.63 billion. The results exclude a charge of $96.6 million for asset disposals, facility closures and accruals press for severance and pension benefits.
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