Even when the cost of a stamp fluctuates, a forever stamp can still be used to mail a letter that weighs one ounce or less within the U.S. with no additional postage necessary. As an example, in 2013, it cost $0.46 to mail a letter weighing one ounce or less within the United States.
These types of excavators are used in places that require careful and safe exploration of underground elements. Dragline excavators. A dragline excavator is a heavy duty equipment that is slightly different and much bigger in size. These types of excavators are used in large scale applications.
Although small in size, mini excavators can handle a variety of jobs, including: 1  Digging holes and trenches. 2  Light demolition. 3  Landscaping. 4  Stump removal. 5  Plowing snow. 6  Transporting and planting trees.