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Highwall definition

Highwall means a vertical or nearly vertical face in solid rock or a slope of consolidated or unconsolidated material that exceeds 3:1.
Highwall means the face of exposed overburden and coal in an open cut of a surface mining activity or for entry to underground mining activities.
Highwall means the unexcavated face of exposed overburden and mineral in a surface mine.

Examples of Highwall in a sentence

  • Highwall mining will be conducted in such a manner that subsidence will not occur and as thus, should be of no consequence to PHC.​In summary, all of the Ramaco existing and proposed mines are well above any significantly producing aquifers.

  • It should be noted that in order to attain these acceptable results, the construction of some additional sediment control structures was required at the Ram No.1 Surface and Highwall Mine.

  • Royalty shall equal Underground Mining R, Highwall Mining R, and/or Surface Mining R as applicable Tonsc = Total Clean Tons of coal proposed to be leased and included in fully approved mine plans.

  • Highwall remnant" means that portion of a highwall that remains after backfilling and grading of a remining permit area.

  • Highwall" means the face of exposed overburden and coal in an open cut of a coal mining operation or for entry to underground mining operations.


More Definitions of Highwall

Highwall means a vertical or nearly vertical face in solid rock or a slope of consolidated or unconsolidated material that is steeper than 3:1.
Highwall means the face of exposed overburden and coal in an open cut of a coal mining operation or for entry to underground mining operations.
Highwall means the face of exposed overburden or coal in an open cut of a surface mine or entry to an underground mine.
Highwall means that side of the pit adjacent to unmined land;
Highwall means the steeply inclined unexcavated face of exposed consolidated materials or exposed consolidated overburden in an open cut of a surface mine.
Highwall means the unexcavated face of exposed overburden and ore in a surface mine.
Highwall means the face of exposed overburden and coal in an open cut of surface coal mining and reclamation activities or for entry to underground mining activities.