Therefore, Mammoth Energy Services, Inc. (NASDAQ:TUSK) is now debt-free and plans to invest in both its Infrastructure Services and Well Completion Services divisions over the next year.

This story appears in the April 2013 issue of National Geographic magazine. Tusk and Sunset A mammoth’s tusk spikes the Siberian sky on Bolshoy Lyakhovskiy Island. Tusks that are discovered with ...

With the sale of elephant tusks under close scrutiny, “ethical ivory” from the extinct woolly mammoth is now feeding an insatiable market in China. This rush on mammoth ivory is luring a fresh ...

TASS/. A resident of Russia’s Stavropol Region was detained at a Krasnoyarsk airport in eastern Siberia on Friday, when a bag weighing 10 kg and containing mammoth tusks was discovered in his ...