In the United States, in almost every state (Montana is the exception), an employee is considered to be an at-will employee unless there is proof otherwise, such as an employment contract. Exceptions to the At-Will Employment Doctrine. Employers need to understand that there are caveats to the above definition.
From Wikipedia, the free encyclopedia. Ninja rocks are broken shards of spark plugs formed by smashing the ceramic portion of the spark plug with a hammer or other large object.
What type of rocks are dolerite rocks? Dolerite rocks are a type of igneous rocks (formed as a result of  cooling of magma or lava). They are mafic (45-52% SiO2),  and subvolcanic (formed within the earth's crustâ¦). Within this  characterisation there is considerable variation. Please see the  link. 3 people found this useful.