A full set (upper and lower) of implants and dentures can cost $7,000-$90,000 or more. CostHelper readers report paying $3,800-$27,858 for implants with a single denture plate, at an average cost of $14,226; and $6,549-$80,000 for a full set of implant-supported dentures (upper and lower), for an average expense of $34,119.
overburden-the surface soil that must be moved away to get at coal seams and mineral deposits. land, soil, ground-material in the top layer of the surface of the earth in which plants can grow (especially with reference to its quality or use); the land had never been plowed; good agricultural soil.
Expansive soils can be found in many areas. Expansive soils expand in size when they get wet, and then shrink as they dry out. As the soil expands and contracts it can create enough force to cause major damage to building foundations, patios, and sidewalks. Expansive soils are also sometimes called shrink-swell soils, swelling soils, adobe, clay, or caliche soils. The damage caused by expansive soil is similar to that of frost heave found in northern regions, but it is NOT the same thing!