Acid mine drainages (AMDs) arise at the weathering of sulphidic minerals.The occurrence of acidic streams is commonly associated with the human mining activities.Due to the disruption and excavation of sulphide deposits, the oxidation processes have initiated.Acidic products of sulphide oxidation accelerate the degradation of accompanying minerals.

Abstract Underground mined-out voids need to be backfilled for the stability of the surrounding rock and also to increase ore extraction from adjacent pillars.One of the relatively newer means is cemented paste backfilling, which has been extensively adopted in underground mining operations around the world.During and after the placement of cemente

Kristine Jensen,1 Thomas Egenod,2 Daniel P Franzen,3,4 Michael Perch1,5 1Department of Cardiology, Section for Lung Transplantation and Respiratory Medicine, Rigshospitalet Heart Center, Copenhagen, Denmark; 2Department of Interventional Pulmonology, Dupuytren University Hospital, Limoges, France; 3Department of Internal Medicine, Uster Hospital, U

The growth of tourism in the Nusa Penida Tourism Area has an impact on the socio-cultural environment due Straws to the development of tourism supporting facilities and infrastructure.Socio-cultural spaces also experience pressure due to conflicts of interest in the use of sacred areas for tourism, resulting in a process of desacralization.Social i

This article expands on the themes of choice and diversity within a national, competitive news market in the seventeenth-century Dutch Republic.It is often suggested that early newspapers largely copied one another.But that did not mean that these newspaper publishers Bedding all made the same choices, or that they adopted the same tone.Rather, the