What two-word slang is an open quarry, secondary glassblowing furnace, dam/reservoir spillway, and a small opening in a wall for anonymous sexual cooperation either side?
Spillway and small weir design. A bell-mouth spillway is designed like an inverted bell where water can enter around the entire perimeter. These uncontrolled spillways are also called "morning glory", (after the flower) or "glory hole" spillways. In areas where the surface of the reservoir may freeze, this type of spillway is normally fitted with ice-breaking arrangements to prevent the spillway from becoming ice-bound. In some cases bell-mouth spillways are gate controlled. The spillway at Hungry Horse Dam "(pictured right)", in Montana, U.S., the highest morning glory structure in the world, is controlled by a ring gate. One of the most
Ashland Dam and Spillway Boston. Its centerpiece is the former Ashland Reservoir, with the dam and spillway at its northern end. From that point, Cold Spring Brook flows north to join a branch of the Sudbury River. The dam is an earthen embankment, built above bedrock and above the level of the reservoir. There is a concrete core wall about thick at the bottom and at the top. The spillway lies at the eastern end of the dam, and is constructed of granite rubble, and a series of steps made of granite laid in concrete. The spillway is long, and is naturalistically designed to