Slide 1 ELEMENTS OF RAILWAY TRACKS Slide 2 A railway track is a combination of 1. Formation 2. Ballast 3. Sleepers 4. Rails 5. Fastenings Slide 3 1. FORMATION The surface…
ΝΑΥΣ Bimohthly Review for the Shipping Industry the 1 00 issue TH After 18 years of serving the marine news industry, we are proud to publish our 100th issue of NAFS.…
Slide 1 Ships Ballast Why the zebra mussel is in Minnesota Slide 2 The Need for Ballast Ballast is used in boats to provide stability Ballast can be people, weights…