About #57 Gravel Stone (P2). #57 Stone is an aggregate that is processed from natural durable materials. The size of #57 Stone spands from very small to 1 inch. #57 Stone is commonly used in mix concrete, mix asphalt and as bases for retaining walls and driveways.#57 Stone can also be applied in irrigation and on gravel roads.57 Stone is an aggregate that is processed from natural durable materials. The size of #57 Stone spands from very small to 1 inch. #57 Stone is commonly used in mix concrete, mix asphalt and as bases for retaining walls and driveways.
Freebase (0.00 / 0 votes) Rate this definition: Del. Del, or Nabla, is an operator used in mathematics, in particular, in vector calculus, as a vector differential operator, usually represented by the nabla symbol â. When applied to a function defined on a one-dimensional domain, it denotes its standard derivative as defined in calculus.
Del Valle, Texas. Del Valle (/ËdÉl ËvÃ¦li/ del VAL-ee) is a suburb of Austin and part of the AustinâRound RockâSan Marcos Metropolitan Statistical Area. It is an unincorporated area in southeastern Travis County, Texas, United States. It has no local government of its own and no official boundaries.