Carbon-manganese steels are in general use for the rails; too much carbon makes the steel brittle, too much manganese makes it hard to weld.
Daily intake of small amounts of manganese is needed for growth and good health in children.
Less abundant elements, which are equally necessary for life, include calcium, manganese , iron, and iodine.
Most Nebraska soils contain sufficient levels of potassium, magnesium, manganese , iron and sulfur for sunflower levels.
Cobalt, nickel and manganese are metals with iron-like properties.
These changes were associated with large increases in phosphorus, potassium, zinc, iron, manganese , and copper.
The list includes sodium, potassium, calcium, magnesium, manganese , iron, cobalt, copper, zinc, and molybdenum.
And it provided vital information on lime requirement, phosphorus, potash, magnesium, copper, manganese and zinc.
Water from some sites contained manganese , often a component of the mineral-rich water discharged from vents.
These alloys usually contain manganese as an impurity because wrought metal scrap is used in preparing them.
