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Model 71773 concrete chain saw cuts reinforced concrete, brick, block, concrete pipe, etc., up to 14 in. deep, in one pass. Powerful and portable, it quickly cuts mechanical openings, irregular shapes, and square comers. Saw can be hand-held or used with the optional SpeedHook guide to make straight cuts through walls and other surfaces. A rugged air-powered saw and flexible track system that mounts onto vessels, tanks and any other flat or curved surface to assure perfectly square cuts is available. The APS-138 Air Powered Saw features a mounting trolley that glides along the FLEX-track, a flexible tracking system, which attaches securely by tack welds onto any size vessel or tank requiring service. Eliminating the use of torches, this saw and track produces cuts with [+ or -] 1/8 in. accuracy and is a suitable system for cutting window sections out of a vessel. Suitable for cutting stainless steel, inconel, aluminum, and carbon steels up to 4 in. thick, the APS-438 has a 3 HP motor, can be supplied with reinforced fiberglass, or abrasive cutting blades, and rigidly fits onto the track by flour ''V'' grooved wheels on the mounting trolley. After cutting, no further rework is needed and the track is reusable. This air mini-saw is a compact, light-weight (1.8 lb.) reciprocating saw that works in limited clearance areas. It produces 500 strokes per minute and is able to cut through mild steel, aluminum, plastic, fiberglass and wood. It features a lock-on mechanism for continuous applications. Sears Industrial. Arborists and landscape maintenance people now have a power pole saw available whose engine meets California''s stringent GARB II as well as EPA standards without the need for a catalytic converter. The PSZ2500S is powered by RedMax''s 25.4cc StratoCharged two-cycle engine, which meets clean air standards by introducing fresh air into the engine between the exhaust gases and the fresh charge of air/fuel mix.

And in Connecticut in August, a nail-gun incident highlighted the importance of training and supervision, as horseplay between two carpenters almost turned deadly. The New Haven Register reported that carpenter Eric Haslob was in the hospital recovering from surgery to repair his heart after fellow carpenter Joseph Dupont fired a finish nail into Haslob''s heart by accident as the two were fooling around on the job. A supervisor told the paper he had warned the two friends against horseplay just the day before.

Thick smoke surrounding the routers was found not to be an issue, nor was hose-line operations. "With the frequency range this thing is using, you get some signal degradation like you would see from satellites during heavy rain, but that was not a factor in the testing we did," Godfrey says. "That was one of the things we looked at, seeing if this thing worked with multiple hose streams."Potential pitfallsWhile officials are encouraged by early results, a number of issues were exposed. For example, steel buildings were found to distort or inhibit signal clarity. High-rise buildings are another question. The system, which currently operates on a two-dimensional X - Y axis only - there is no Z or elevation axis - has yet to be tested in high-rise fire environments, although communications engineers are now looking at the feasibility of such operations.