Marine pollution has been a hot issue since 1990s around the world. Chua discussed marine pollution prevention and management in the East Asian Seas, concentrating on pollution caused by land and sea based sources [2]. The land based sources included destruction of coastal habitats, urban effluents discharge and coastal sand mining has resulted in serious coastline erosion. Sea based sources in...

The article describes the main types of technological schemes for working out flooded strata sand deposits using hydraulic shovel excavators. analysis scientific and technical literature describing experience excavators in open-pit mining, including pits extraction construction sand, has been carried out. proposed scheme is that development reserves without preliminary water reduction by a exca...

Sand is considered one of the most consumed natural resource, being essential to many industries, including building construction, electronics, plastics, and water filtration. This paper assesses environmental impact sand extraction problems associated with its illegal exploitation. The analysis indicates that extracting at a greater rate than which it naturally replenished has adverse conseque...

A mathematical model is presented for calculating the change in volume and sand-bypassing rate at ebb-tidal shoals. Conceptually and mathematically, the ebb-tidal shoal is distinguished from bypassing bars that emerge from it and from attachment bars where the bypassing bars merge with the beach. The volumes and bypassing rates of these morphologic entities are calculated by analogy to a reserv...

Sand dripping in 1 dimensional Sand Pile Model is rst studied. Patterns and signals appear. Their behaviors and interactions are explained and asymptotic approximations are made. The total collapsing time of a single stack of sand is linear in function of the number of grains.

This work deals with bioaccumulation of Zn, Pb, Cu and Cd in foliage of Scots pine, grown on mine soils. Regression models were used to describe relationships between pine elements bioavailability and biological (dehydrogenase activity) and physico-chemical properties of mine soils developed at different parental rocks. Concentration of trace elements in post-mine ecosystems did not differ from...

The increasing demand and exorbitant use of river bed sand in foundries over the years have led to its depletion at an alarming rate. Consequently, many states India imposed severe restrictions on mining riverbed sand. Therefore, effort is made explore potential sea for cast iron foundry applications. Experiments were performed optimizing composition molding with respect functional properties n...

Sand mining is an important economic activity and has been undertaken across the world over centuries. However, indiscriminate sand activities have detrimental socio-economic environmental effects. The objective of current study was to determine effects in Mbiuni Ward, Mwala Constituency, Machakos County, Kenya. Stratified random sampling enabled arrive at a sample size made up miners, loaders,...