Dragon-type PokÃ©mon may be holding this item when caught. A Dragon Scale is an item introduced in Generation II that evolves Seadra into Kingdra when held while being traded. This item cannot be bought, only found, but can be sold for 1050. In the Johto region games, this item can be found in Mt. Mortar and at the PokÃ©athlon Dome in PokÃ©mon HeartGold and SoulSilver.
A millstone weighing a ton or two can do a lot of damage before it comes to rest. A millstone turning 125 revolutions per minute will destroy the millstone cover and I seen then destroy machinery in a mill and go through a 14 inch square log wall like butter and before they come to rest out side the mill.
Lightweight concrete has a cast density of about 115 pcf. A square foot of 1.5â thick concrete weighs about 18 pounds for normal weight concrete and just under 14.5 pounds for lightweight concrete (a weight savings of less than 4 pounds per square foot). For comparison, 3cm (about 1.25â thick) granite weighs about 17.5 lbs per square foot. For most kitchen and bathroom cabinets, little or no modifications are necessary to bear the weight of 1.5â thick normal weight concrete.