Magmatic stoping is discussed to be a main mechanism of magma emplacement. As a consequence of stoping, abundant country-rock fragments should occur within, and at the bottom of, magma reservoirs as "xenolith graveyards", or become assimilated. However, the common absence of sufficient amounts of both xenoliths and crustal contamination have led to intense controversy about the efficiency of st...

Measurements of mineral grades of an industrial mineral deposit (talcum) are used in a geostatistical case study. The data available come from a quality sampling scheme of the operating mine and can be assigned to two stoping layers each 3 m thick. The aim of the study is to establish a quality model on the basis of the mined blocks of the deposit. This will be used in the direct control of the...

We characterize the optimal switching problem as coupled optimal stoping problems. We then use the optimal stopping theory to provide a solution. As opposed to the methods using quasi-variational inequalities and verification theorem we directly work with the value function.

We characterize the optimal switching problem as coupled optimal stoping problems. We then use the optimal stopping theory to provide a solution. As opposed to the methods using quasi-variational inequalities and verification theorem we directly work with the value function.