- Rock properties and laboratory testing

2013 ◽  
pp. 92-127
2005 ◽  
Vol 78 (1-2) ◽  
pp. 29-51 ◽  
Author(s):  
Denis E. Gill ◽  
Robert Corthésy ◽  
Maria Helena Leite

1992 ◽  
Vol 29 (4) ◽  
pp. 666-674 ◽  
Author(s):  
D. J. Gendzwill ◽  
D. Stead

Saskatchewan potash deposits are found in relatively uniform, flat-bedded strata with few irregularities. Potash mines are highly automated and efficient, taking advantage of the uniform strata. However, anomalous geological conditions can lead to severe problems, especially with water inflows. One mine has been lost to flooding, and other mines now have or previously had large inflows of water. Geophysical techniques, especially the method of vertical seismic reflection from the surface, are used to predict anomalous geological conditions. Seismic, electric, and other geophysical methods are also used underground, sometimes in boreholes, to detect conditions around the mine openings such as the thickness of the salt cover over the mine, fractures around the opening, shale beds, the presence of water, and other rock properties. The mines generate seismic activity ranging from magnitude 3.7 earthquakes to tiny micro-earthquakes, and various field monitoring and laboratory testing programs have analyzed these. To avoid hazards discovered by geophysical methods, mine managers have often changed their plan of operation or even deleted large ore reserves. Key words : geophysics, potash mining, seismic, earthquakes.


2016 ◽  
Vol 21 (2) ◽  
pp. 3-8
Author(s):  
Seth D. Cohen ◽  
Steven Mandel ◽  
David B. Samadi

Abstract To properly assess men and women with sexual dysfunction, evaluators should take a biopsychosocial approach that may require consultation with multiple health care professionals from various fields in order to get to the root of the sexual dysfunction; this multidisciplinary methodology offers the best chance of successful treatment. For males, this article focuses on erectile dysfunction (ED) and hypogonadism. The initial evaluation of ED involves a thorough case history, preferably taken from the patient and partner, physical examination, and proper laboratory and diagnostic tests, including an acknowledgment of the subjective complaint. The diagnosis is established on the basis of an individual's report of the consistent inability to attain and maintain an erection sufficient to permit satisfactory sexual intercourse. Initial workups for ED should entail a detailed history that can be obtained from a validated questionnaire such as the International Index of Erectile Function and the Sexual Health Inventory for Men. Hypogonadism is evaluated using the validated Androgen Deficiency in the Aging Male questionnaire and laboratory testing for testosterone deficiency. Treatments logically can begin with the least invasive and then progress to more invasive strategies after appropriate counseling. The last and most important treatment component when caring for men with sexual dysfunction—and, arguably, the least practiced—is close follow-up.


Alloy Digest ◽  
1993 ◽  
Vol 42 (9) ◽  

Abstract PRODEC STAINLESS TYPE 316 is a standardized grade in plate and bar with an improved machining capability over the conventional AISI Type 316. It is a product of extensive laboratory testing and application proven. Its improved machinability offers: shorter machining time; longer tool life; better surface finish; less distortion problems; more homogeneity in microstructures; and marginally increased resistance to corrosion. This datasheet provides information on composition and physical properties. It also includes information on machining. Filing Code: SS-549. Producer or source: Avesta Sheffield Inc.


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