• Economic and Environmental Geology
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• v.48 no.3
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• pp.205-212
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• 2015

We have verified applicability of UAV(Unmanned Aerial Vehicle) photogrammetry to a mining engineering. The test mine is a smectite mine located at Gyeongju city in Gyeongnam province, Koera. 448 photos over area of $600m{\times}380m$ were taken with overlapped manner using Cannon Mark VI equipped to multicopter DJI S1000, which were processed with AgiSoft Photoscan software to generate orthophoto and DEM model of the study area. photogrammetry data with 10 cm resolution were generated using 6 ground control positions, which were exported to the 3D geological modeling software to make a topographic surface object. Monitoring of amount of ore production and landsliding could be done with less than 1 hours photographing as well as low cost. A direct link between UAV photogrammetry and 3D geological modeling technology might increase productivity of a mine due to appling the topographical surface change immediately according to the mining operation.

• Asian Journal of Turfgrass Science
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• v.24 no.2
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• pp.218-224
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• 2010

The purpose of this case study is to analyze the environmental and sociological impacts on a golf course construction at the damaged area of a previous limestone mine. Due to a long term of the open-pit mining, that site had been abandoned with geographical and ecological destruction before it was renovated to Ostar Danyang public golf course. This study is focused on the review of restoring the ecosystem through golf course construction procedures. Literature surveys of restoration through golf course construction in Japan and Canada were analyzed the procedure of utilization of previously existed lime mine. The sociological and environmental changes before and after construction were compared and analyzed. Environmental impacts on geographical, animal and plant ecology, and water quality were not affected or significantly improved after golf course construction from the mining site existed before. The local economy was also improved by increasing employment of resident and tax payment to local government. The construction of golf course could be one of the typical alternatives of ecological restoration of abandoned lime mine. Moreover in this project, minimizing the environmental impacts on surrounding ecosystem was emphasized by a larger size of developing construction. The harmonious lay-out on nature and artificial landscape were also considered a very first stage of construction procedure.

• Economic and Environmental Geology
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• v.48 no.5
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• pp.391-400
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• 2015

Korea is a global steel producer and a major consumer while iron ore producing is very low compared to the demand. On the other hand, North Korea holds tremendous amount of iron reserves and, however, its producing rate is limited. Moreover, the data regarding mineral resources of North Korea is very limited and uncertain because of political isolation. This study estimated the amount of iron ore resource and production amount for the Musan Iron mine, the world-known open-pit mine of North Korea, using satellite imagery(Landsat MSS, ASTER) and digital maps between 1976 to 2007. As a result, the mining area of Musan mine was increased by $6.1km^2$ during the 30 years and the mining sector was estimated as $4.9km^2$. We estimated the iron resources and production amount of 0.7 and 0.2 billion metric tons, respectively based on 3D modeling and average iron ore density of Anshan formation in China. This amount indicates 8.1 million tons of annual average production and it coincides well with previous reports. We expect this study would be utilized significantly on inter-Korean exchange programs by providing trustable preliminary data.