Buscar
Mostrando ítems 1-10 de 63
Análise comparativa dos métodos de lavra Terrace Mining e Strip Mining para mineração de gipsita
(Universidade Federal de PernambucoUFPEBrasilPrograma de Pos Graduacao em Engenharia Mineral, 2019)
“Aplicação da Terrace Mining como alternativa para lavra de gipsita na região do Araripe – Pernambuco”
(UNIVERSIDADE FEDERAL DE PERNAMBUCO, 2015)
Análise comparativa dos benefícios econômicos, operacionais e ambientais do método Terrace Mining na mineração de gipsita do polo gesseiro do Araripe
(Universidade Federal de PernambucoUFPEBrasilPrograma de Pos Graduacao em Engenharia Mineral, 2018)
Evaluación geotécnica del área de Los Aceitunos en la mina de carbón Paso Diablo, municipio Mara, estado Zulia
(Ciencia e Ingeniería, 2010)
Dynamic changes in the lower Gállego River (Ebro Basin, NE Spain) and their relationship with anthropic activities and the quaternary substrateCambios dinámicos en el curso inferior del río Gállego (cuenca del Ebro, NE de España) y su relación con las actividades humanas y el sustrato cuaternario
(Universidad de La Rioja, 2020-04)
The lower Gállego River has been strongly degraded since the 1960s due to human activity (gravel mining, dump accumulation, channeling works), which has produced a deep channel incision. Although these human-driven processes ...
Rare Moss-Built Microterraces in a High-Altitude, Acid Mine Drainage-Polluted Stream (Cordillera Negra, Peru)
(Springer, 2015)
The Rio Santiago in the Cordillera Negra of Peru is severely contaminated by acid mine drainage in its headwaters. In a strongly acid stream, at about 3800 m above sea level (masl), microterraces were found with terrace ...
CHEMICAL AND BIOCHEMICAL PROPERTIES OF SOILS DEGRADED BY TIN MINING AND IN A REHABILITATION PHASE IN THE AMAZON BASIN
(Soc Brasileira De Ciencia Do Solo, 2015-05-01)
Tin mining in the Serra da Onca in the Jamari National Forest, State of Rondonia, Brazil, caused severe chemical, physical, and biological changes in the soil. In 1997, the area was divided into plots and a rehabilitation ...
FACTORS THAT INFLUENCE THE OCCURRENCE AND DISPERSION OF IRON MINERALS IN SANDY SEDIMENTS OF TERRACES AND FLOODPLAINS OF RIVERS DRAINING THE QUADRILATERO FERRIFERO (MG)FATORES QUE CONDICIONAM A PRESENÇA E DISPERSÃO DE MINERAIS DE FERRO NOS SEDIMENTOS ARENOSOS DAS CALHAS, VÁRZEAS E TERRAÇOS DOS RIOS QUE DRENAM O QUADRILÁTERO FERRÍFERO (MG)
(Instituto de Geociências e Ciências Exatas, Universidade Estadual Paulista, 2018)
Diseño del sistema de explotación de materiales pétreos en el área minera “Zona de manejo especial Río Upano”, código 90000373, ubicada en las parroquias Sevilla Don Bosco, Macas y General Proaño, cantón Morona, provincia de Morona Santiago.
(Escuela Superior Politécnica de Chimborazo, 2022-10-27)
The aim of this work was to design a suitable system for the exploitation of stone materials based on sediment transport in the mining area of the Upano River Special Management Zone, located in Morona canton, province of ...