The tax rules offer a choice of vehicle expense deduction methods, and if you itemize the vehicle expenses, a portion of a lease payment can be used as a business expense.
This article is about the chemical element. For other uses, see Tungsten (disambiguation). Tungsten, also known as wolfram, is a chemical element with symbol W and atomic number 74. The word tungsten comes from the Swedish language tung sten, which directly translates to heavy stone. Its name in Swedish is volfram, however, in order to distinguish it from scheelite, which is alternatively named tungsten in Swedish.
Emery stone is a granular metamorphic or igneous rock that is rich in corundum. It is a mixture of oxide minerals, typically corundum, magnetite, spinel and/or hematite. It is the most common form of natural corundum that has been used to manufacture abrasives.The use of emery as an abrasive has declined significantly in the last several decades.ost people are familiar with corundum; however, very few people know it by its mineral name-instead they know it by the names ruby and sapphire.. A gemstone-quality specimen of corundum with a deep red color is known as a ruby..