The aircraft carriers of the Nimitz Class are the largest warships currently in service in the world. At around $4.5 billion each, these carriers are the most expensive ship on this list. The ten ships of this class help the United States flex its military muscle around the world.
Introduction to China Jaw Crusher. Jaw crushers machine are invented in 1858 and first widely applied in road paving and then in mines.
Bottom: a human lower jaw found in a cave near Balanica, Serbia (Mirjana Roksandic). The fossil, labeled BH-1, was found to be at least 397,000 years old and possibly older than 525,000 years old, a time when distinctly Neanderthal traits began to appear in Europe.