Marine minerals : exploring our new ocean frontier

این منبع در مرحله 11C و زیرموضوع «منابع معدنی دریایی» پذیرفته شد. سطح C و امتیاز 70 نشان‌دهنده میزان ارتباط آن با کتابخانه تخصصی مس و معدن است. دلیل پذیرش: منبع عمومی درباره ظرفیت اقتصادی و توسعه منابع معدنی بستر دریا.

Ever since the research vessel H.M.S. Challenger hoisted manganese nodules from the deep ocean during its epic voyage in 1873, there has been persistent curiosity about seabed minerals. It was not until after World War II, however, that the black, potato-sized nodules like those recovered by the Challenger became more than a scientific oddity. The post-war economic boom fueled an increase in metals prices, and as a result commercial interest focused on the cobalt-, manganese-, nickel-, and 1A nautical mile is 6,076 feet. All uses of the term ''mile"' in this assessment refer to a nautical mile.