Access to fulltext denied by publisher Please contact your local library to acquire this article: "Pressure washing and sand-blast pressure washing: Effective and efficient outcrop cleaning methods". By: Krause, F.and de Bie, I. R. Journal of Sedimentary Petrology, 1989, Vol. 59, No. 4: 631-633. Publisher: Society of Economic Paleontologists and Mineralogists / Geological Society of Canada