Other photos of SCRAM buttons show signs of wear too, from my limited knowledge I think a SCRAM is also used in normal operating procedure as a rather extreme "

Other photos of SCRAM buttons show signs of wear too, from my limited knowledge I think a SCRAM is also used in normal operating procedure as a rather extreme "off" button. https://en.wikipedia.org/wiki/Scram#/media/File:NS_Savannah_SCRAM_MD1.jpg https://en.wikipedia.org/wiki/Scram#/media/File:NS_Savannah_...