While Americans remain unfamiliar with fuki, Japanese farmers grow vast amounts of the vegetable (also known as sweet coltsfoot or giant butterbur) for their rhubarb-like stalks. Another colony-former, fuki grows where few other vegetables will---in wet, dark places. The leaves grow quite large, and the entire plant takes up a good deal of room, growing 3 to 6 feet high and wide. After harvesting the stalks, cut them into 6-inch pieces, blanch to loosen the outer skin, then peel.
Summary Acid mine drainage (AMD) refers to the outflow of acidic water from a mining site. In most cases, this acid comes primarily from oxidation of iron sulfide (FeS2, also known as pyrite or fool's gold), which is often found in conjunction with valuable metals.
INTRODUCTION. 1  Coal is abundant in the U.S., is relatively inexpensive, and is an excellent source of energy and byproduct raw materials. 2  Because humans have used coal for centuries, much is known about it. 3  Some of the problems that accompany the mining and use of coal are well known. Acid mine drainage results when coal beds and surrounding strata containing medium to high amounts of sulfur, in the form of compounds known as sulfides, are disrupted by mining, thereby exposing the sulfides to air and water.