Mine Production Chain
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. Analysis of the impact of the operational variability onto execution of a mine plan. / Impacto da variabilidade operacional na execução do plano de lavra.
One of the main challenges for mine planning engineers is to produce operationally feasible mine plans which take into account the practical variability of the mining operation. It is quite common for the mining industry to work with plans that have been based on estimated means or historical values for most of the key operational variables, which although a
Publicado em: 2009
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2. Modelo de gerenciamento de informações na cadeia de valor de mineração e de petróleo. / Information management model in the mining and oil value chain.
This thesis starts by identifying the key issues of the research: visualization and management of information. It is widely known that one of the most common difficulties in information management is to obtain a complete and integrated view of all the company processes and activities. Another common difficulty is to maintain the necessary data always precise
Publicado em: 2007
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3. Respiratory health of workers exposed to low levels of chromium in stainless steel production.
OBJECTIVES: To determine whether occupational exposure to chromite, trivalent chromium, or hexavalent chromium causes respiratory diseases, an excess of respiratory symptoms, a decrease in pulmonary function, or signs of pneumoconiosis among workers in an integrated chain of stainless steel production. METHODS: This cross sectional study was carried out in 1