Nigeria is richly endowed in convertible natural resources of which solid minerals are a member of the endowments. However, the country is basically a mono-product economy based on its vast oil deposit accounting for over 84% of foreign earnings and 25% of GDP. The triple challenges of the volatile nature of global oil politics, achieving the objectives of the millennium development goals and t...

The performance of adhesive bonded components and repairs in the aviation industry has varied significantly, resulting in a perception that adhesive bonding may not be reliable. The authors suggest that adhesive bond failures require closer scrutiny to accurately assess the causes of these failures as in recent history they have not received the same rigorous investigative scrutiny usually asso...

The Odessa meteorite craters were formed by the hypervelocity impact of a type IAB iron meteorite [1] about 50,000 years ago [1,2] in the high plains region of western Texas. The extraterrestrial nature of the Odessa craters was established by the presence of thousands of meteorite fragments [3], the morphology of the main crater [4] and by the existence of tons of microscopic meteoritic materi...

poland is a traditional mining country ranking high in europian mining. a considerable part of polish national-gross-product comes from mineral resources. a large number of the working people work in the mines and related industry. research and educational centers depending on mining are well grown and are of great importance. the major mining commodities of poland are: coal, brown coal copper,...