Stuffing science began to flourish in the 1950s, with simple tests of sands and coal pumping in moderate concentrations. This science has gradually evolved to include pulp pumping in the food industry and process industries, coal and oil blends as new fuels and numerous mixtures of minerals with water. What is transported is a pulp that is a mixture of solids and liquids in different proportions whose physical characteristics depend on factors such as the type of ducts for transport, viscosity, pulp density among others. This work is carried out in the San Ignacio mine of Morococha, whose geology allows to exploit these mineralized bodies under the mechanized cutting and filling method and chambers and pillars, to achieve the established production objectives, using appropriate machinery for these purposes from dumpers and dumpers. and brought to surface with trolley line directly from t...

The paper presents a review of the literature of news coverage on female presidential candidates. For this purpose, seven coverage frames  are included: a) visibility, b) gender reiteration, c) mediation of the intimate sphere, personality, d) thematic agenda, e) tonality and f) particularities of the media. Finally, an operationalization proposal is formulated for each of the frames that could be used in future research that addresses these political figures. It is concluded that women are represented from their intimate sphere and femininity, characteristics that are far from being culturally appropriate for debate in the public and political arena.

Sociedad Minera Austria Duvaz S.A.C., con más de 100 años en el rubro minero, viene desarrollando un agresivo plan de incremento de producción, desarrollado una serie de proyectos como: mecanización de las operaciones mineras, incremento de reservas mediante sondajes diamantinos, incremento del sistema de izaje de los piques existentes, profundización del pique 740, ampliación de la Planta Concentradora, etc. Desde el año 2014, las áreas de Planeamiento y Proyectos SMAD, iniciaron los primeros estudios del proyecto para la profundización del Pique principal; pique 740, previendo el límite de utilización de los inclinados para la extracción (pique inclinado 920 y 880), la capacidad de izaje que están teniendo y el incremento sostenido qu planea tener de la producción con la mayor profundización. La profundización del pique 740 se iniciará desde la cota 1730 hasta la cota ...