Substitution Possibilities for Unpriced Natural Resources: Restricted Cost Functions for the Canadian Metal Mining Industry

1986 ◽  
Vol 68 (3) ◽  
pp. 398 ◽  
Author(s):  
Robert Halvorsen ◽  
Tim R. Smith
Keyword(s):  
Natural Resources ◽  
Mining Industry ◽  
Cost Functions ◽  
Metal Mining

scholarly journals THE CONTRIBUTION OF UNIVERSITIES OF THE SOUTH OF RUSSIA IN THE RESTORATION OF ITS MINING POTENTIAL

2017 ◽  
pp. 112-120
Author(s):  
Y. I. Razorenov ◽  
L. P. Shulgaty ◽  
B. V. Dzeranov
Keyword(s):  
Natural Resources ◽  
Mining Industry ◽  
Ore Deposits ◽  
Educational Process ◽  
Historical Background ◽  
North Caucasus ◽  
The South ◽  
Resource Base ◽  
Metal Mining ◽  
Field Development

Given the historical background of ore and non-ore fields of the South of Russia, the reasons for their current state. Set the problem field development of the South of Russia, namely, the weakening in the rate or complete cessation of their operation in the post-reformation era. The role of mining UNIVERSITIES in the South of Russia in scientific and technical progress of mining in the North Caucasus during the development of the natural resources that form the mineral resource base of the Russian statehood. Formulated the concept of technological modernization of mining technology as the program of converting from mining to non-traditional technology. Contents of changes in the system of higher education, which was enriched with new sections of Sciences, which required the intensification of the educational process. Characterized the position of the Federal districts of the South of Russia in mineral resources base of Russia. The characteristic of large ore and non-ore deposits with the allocation of values Zadonskogo and Tyrnyauz fields. Given historical background of education, Novocherkassk Polytechnic Institute, and North-Caucasian Institute of non-ferrous metals and their contribution of groups in research and training engineers for the mining industry. Announced directions of perfection of technology of extraction of ore and nonmetallic raw materials with the use of selective excavation of ore, leaching of poor and substandard ore and disposal of metal mining waste production, leaching into the cage. The peculiarities of the training of mining engineers. Formulated the aim of education in the mountain schools of the South of Russia which is to teach mountain professionals the humane treatment of nature, and the ability to participate in environmental protection and rational use of natural resources.

Seasonal reproductive patterns and recommended sampling times for sentinel fish species used in environmental effects monitoring programs in Canada

2010 ◽  
Vol 18 (NA) ◽  
pp. 115-135 ◽  
Author(s):  
Timothy J. Barrett ◽  
Kelly R. Munkittrick
Keyword(s):  
Fish Species ◽  
Environmental Effects ◽  
Reproductive Strategy ◽  
Mining Industry ◽  
Pulp And Paper ◽  
Reproductive Pattern ◽  
Metal Mining ◽  
Reproductive Patterns ◽  
Sampling Times ◽  
Environmental Effects Monitoring

Canada’s environmental effects monitoring (EEM) program is currently in its fifth cycle of monitoring for the pulp and paper industry and second cycle of monitoring for the metal mining industry. More than 60 different sentinel fish species have been used in the EEM fish population surveys and reproductive impacts have been identified as an issue of concern in the pulp and paper program. A review of the literature was conducted to obtain details of the reproductive biology of each fish species that has been used in EEM studies in Canada. Using available data on seasonal changes in gonadosomatic indices, the seasonal reproductive patterns of Canadian fish species were divided into categories based on reproductive strategy and the timing of initiation of gonadal recrudescence. Recommended sampling times were developed for each reproductive pattern based on periods of temporal stability, minimum variability, and maximum value in gonadosomatic indices within a reproductive cycle. The reproductive strategy, spawning time, spawning temperature, and recommended sampling time were provided for the each sentinel fish species as well as life history characteristics including longevity, age and size at maturity, and mobility. Examination of the fish surveys using small bodied forage species from the EEM pulp and paper program revealed that approximately 72% of these studies were not conducted at the developed recommended sampling times and the magnitude of impacts may be underestimated by failing to sample at the recommended time.

Development of aquatic plant bioassays for rapid screening and interpretive risk assessments of metal mining liquid waste waters

1996 ◽  
Vol 33 (6) ◽  
pp. 155-161 ◽  
Author(s):  
H. G. Peterson ◽  
N. Nyholm ◽  
M. Nelson ◽  
R. Powell ◽  
P. M. Huang ◽  
...  
Keyword(s):  
Mining Industry ◽  
Liquid Waste ◽  
Aquatic Organisms ◽  
Rapid Screening ◽  
Regulatory Agencies ◽  
Metal Mining ◽  
Photosynthetic Organisms ◽  
Modifying Factors ◽  
Aquatic Effects ◽  
Plant Bioassays

The use of non-photosynthetic organisms alone to describe environmental impact has been recognized by regulatory agencies, industry, and academia as being insufficient both in Europe and North America. Lack of adequate testing methods for photosynthetic aquatic organisms is considered as a major impediment to the successful regulation and safe use of pesticides and waste discharges and is of even more concern to the metal mining industry due to the non-biodegradable nature of its waste streams. This work shows that the chemical effluent limits set in the “Metal mining liquid effluent regulations and guidelines” provide variable protection of aquatic photosynthetic organisms. Aquatic effects of the more toxic metals (e.g., copper, nickel, and zinc) may occur at levels that are one to two orders of magnitude lower than present limits. To establish adequate protection of receiving water bodies it may be necessary to establish site-specific criteria taking into consideration toxicity modifying factors of individual sites. If the establishment of such criteria is determined with a host of ecologically relevant organisms, it will be possible to design effective environmental protection at the least possible cost.

The metal mining industry in Eastern Europe

1992 ◽  
Vol 16 (4) ◽  
pp. 250-260 ◽  
Author(s):  
Olivier Bomsel ◽  
Christian Hirschhausen
Keyword(s):  
Eastern Europe ◽  
Mining Industry ◽  
Metal Mining

Optimization of blasting parameters for an underground mine through prediction of blasting vibration

2019 ◽  
Vol 25 (9) ◽  
pp. 1585-1595 ◽  
Author(s):  
Shida Xu ◽  
Yuanhui Li ◽  
Jianpo Liu ◽  
Fengpeng Zhang
Keyword(s):  
Mining Industry ◽  
Principal Component ◽  
Support Vector ◽  
Total Charge ◽  
Blasting Vibration ◽  
Horizontal Distance ◽  
Metal Mining ◽  
Monitoring Point ◽  
Maximum Charge ◽  
Svm Model

Drilling and blasting remains the primary method of rock fragmentation in metal mining. However, blasting vibration can adversely affect the stability of the rock. Therefore, prediction of blasting vibration is essential in the mining industry. This paper proposes a combination of principal component analysis (PCA) and support vector machine (SVM) model to predict blasting vibration. Here, PCA was used to simplify the inputs of the SVM. Relative location of the monitoring point to blasting source, total charge, maximum charge per delay, number of delays, burden, spacing, height, and horizontal distance were used as inputs of the combination model (PCA-SVM), while peak particle velocity was set as output. The PCA-SVM model was successfully employed to adjust blasting parameters of the No. 21 stope in Hongtoushan Copper Mine. Two blasting data sets were used to compare the capability of the PCA-SVM model with conventional predictors. The results prove the superiority of the PCA-SVM model in estimating blasting vibration.

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