nitrogen oxides and carbon monoxide gases together with dust are known as the major pollutants arising during the blasting operations using the ammonium nitrate-fuel oil (anfo) explosive at the sungun surface mine, located in the northwest of iran. the pollutants were monitored during some blasting operations at the mine. it was concluded that the gases and dust clouds initially went up to the ...

sarcheshmeh copper mine, with the final reserves of 828 million tons of sulfur ore and average grade of 0.74%, is known to be the largest open pit of iran and most probably the second largest copper mine in the world. this mine is located in the seismotectonic zone of central-iran, and 23 km away from the 150 km long rafsanjan active fault.in this study the vulnerability of the west wall of the...

PT. Berau Coal is one of the mining companies in Indonesia that focuses on coal and sales. This research was carried out haul road at Site Gurimbang Mine Operation, where condition currently undulating located above a swamp area. reduces speed HD 785, resulting unit's productivity not achieving company's target. The effort to improve by using geotextile as method strengthening road. aim this de...

Road mortality has the potential to alter the structure of turtle populations because turtle populations are highly sensitive to additive sources of adult mortality. To address the issue, we captured painted turtles ( Chrysemys picta; n = 174) and snapping turtles ( Chelydra serpentina; n = 56) in 18 wetlands surrounded by low road density (≤1.5 km roads/km of landscape) and 17 wetlands surroun...

Speed, flow and volume are the most important elements of the traffic flow. In this study, the speed-density regression models are compared between congested city road and the tolled highway based on traffic flow data on Beijing Third Ring Road (BTRR) and Jing Jin Tang Highway (JJTH) in China, which are collected by road detectors on each road. The speed-density regression curves are analyzed b...

It has been hypothesized that mobile species should be more negatively affected by road mortality than less-mobile species because they interact with roads more often, and that species with lower reproductive rates and longer generation times should be more susceptible to road effects because they will be less able to rebound quickly from population declines. Taken together, these hypotheses su...

In the traffic flow on the city road network, it is observed that a new additional road, which is constructed for overcoming the traffic jam, causes more terrible traffic jam. This is well known as Braess’s paradox. Recently, it is pointed out that Braess’s paradox depends on the traffic density and the paradox disappears at high traffic density. The aim of this study is to describe the algorit...