Another cleaning alternative is selected abrasive
blasting. Blasting uses a forced media such as
silica sand, steel grit, aluminum oxide, nut shells,
glass or plastic beads to mechanically displace
soils (Wolfe et al., 1991). It can remove
oxides and scales resulting from extreme heat
exposure. A disadvantage of blasting is that it
can cause pitting and erosion of the material
surfaces.