Tips And Techniques on How to Ballast Model Railroad Track.
Railroad Ballast Fouling Detection Using Ground Penetrating Radar – A New Approach Based on Scattering from Voids Roger ROBERTS, John RUDY, GSSI, Salem, NH, USA Imad AL-QADI, Erol TUTUMLUER, University of Illinois, Urbana, IL, USA Jeff BOYLE, Sperry Rail Service, Danbury, CN, USA Abstract. Railroad ballast is the uniformly-graded aggregate between and underneath railroad ties. …