Last week thousands of tradesmen and tradeswomen descended on Las Vegas for the annual World of Concrete show. Held over 5 days, the event filled each hall to its capacity and even spilled out onto several parking lots across the street from the convention. The overwhelming theme of the show from a power tool standpoint was silica dust control and improved vibration technology in products like rotary hammers. Here’s a quick look at some of what we saw. Not everything in this list is new, though much of it is.