This paper presents an examination of natural stone to slip resistance. The test is carried out according to the BAS EN 14231:2009 standard. This standard specifies a test method for determining the slip resistance value of the surface of the exposed face on natural stone elements intended to be used for flooring in buildings. https://www.roneverhart.com/Western-Digital-Ultrastar-DC-HC530-WUH721414ALE6L1-0F31170-14TB-7-2K-RPM-SATA-6Gb-s-512e-SED-3-5in-Hard-Drive/