Gemstones
D.W. Olson
2000, Mining Engineering (52) 41-42
Part of the 1999 Industrial Minerals Review. A review of the state of the gemstone industry worldwide in 1999 is presented. According to the U.S. Geological Survey, the estimated value of natural gemstones produced from U.S. deposits in 1999 was $13.5 million. The estimated value of U.S. apparent consumption of...
Exploration
D.R. Wilburn
2000, Mining Engineering (52) 38-48
This summary of international nonfuel mineral exploration activities for 1999 draws upon available data from literature, industry and US Geological Survey (USGS) specialists. The report documents data on exploration budgets by region and commodity and identifies significant mineral discoveries and exploration target areas. It also discusses government programs affecting the...
Kaolin
R.L. Virta
2000, Mining Engineering (52) 47-48
Part of the 1998 Industrial Minerals Review. Activities in the kaolin industry in 1999 are reviewed. U.S. production of kaolin in 1999 was estimated to be 10.7 million st, an increase of 0.3 million st from the previous year. The paper industry is the largest user of kaolin, accounting for...
Common clay and shale
R.L. Virta
2000, Mining Engineering (52) 35-36
Part of the 1999 Industrial Minerals Review. The clay and shale market in 1999 is reviewed. In the U.S., sales or use of clay and shale increased from 26.4 million st in 1998 to 27.3 million st in 1999, with an estimated 1999 value of production of $143 million. These...
Industrial diamond
D.W. Olson
2000, Mining Engineering (52) 44-46
Part of the 1999 Industrial Minerals Review. A review of the state of the global industrial diamond industry in 1999 is presented. World consumption of industrial diamond has increased annually in recent years, with an estimated 500 million carats valued between $650 million and $800 million consumed in 1999. In...
Strontium
J.A. Ober
2000, Mining Engineering (52) 62-63
Mexico is the leading producer of celestite, the most common strontium ore. Chemical Products is the only major US maker of strontium compounds. It produces all of its strontium carbonate from imported Mexican celestite. Mexico is also a large producer of strontium carbonate, as are China, Germany, Japan and the...
Construction aggregates
W. H. Langer, V.V. Tepordei, W.P. Bolen
2000, Mining Engineering (52) 36-37
Construction aggregates consist primarily of crushed stone and construction sand and gravel. Total estimated production of construction aggregates increased in 1999 by about 2% to 2.39 Gt (2.64 billion st) compared with 1998. This record production level continued an expansion that began in 1992. By commodities, crushed stone production increased...
Ball clay
R.L. Virta
2000, Mining Engineering (52) 28-28
Part of the 1999 Industrial Minerals Review. The state of the ball clay industry in 1999 is presented. Record highs in the sales and use of ball clay were attained in 1999 due to the continued strength of the U.S. economy. U.S. production was estimated at 1.25 million st for...
Industrial garnet
D.W. Olson
2000, Mining Engineering (52) 46-46
The state of the global industrial garnet industry in 1999 is discussed. Industrial garnet mined in the U.S., which accounts for approximately one-third of the world's total, is usually a solid-solution of almandine and pyrope. The U.S. is the largest consumer of industrial garnet, using an estimated 47,800 st in...
Behavior and passage of silver-phase American eels, Anguilla rostrata (LeSueur), at a small hydroelectric facility
Alex Haro, Ted Castro-Santos, Jacques Boubee
2000, Dana (12) 33-42
No abstract available....
Peat
S.M. Jasinski
2000, Mining Engineering (52) 51-51
The United States continued to be significant producer and consumer of peat for horticultural and industrial applications in 1999. Florida, Michigan and Minnesota were the largest producing states, in order of output....
Quantification of the nitrogen cycle in a prairie stream
Walter K. Dodds, Michelle A. Evans-White, Nicole M. Gerlanc, Lawrence Gray, Dolly A. Gudder, Melody J. Kemp, Amanda L. Lopez, David Stagliano, Eric A. Strauss, Jennifer L. Tank, Matt R. Whiles, Wilfred M. Wollheim
2000, Ecosystems (3) 574-589
Nitrogen (N) was added for 35 days in the form of 15NH4Cl to Kings Creek on Konza Prairie, Kansas. Standing stocks of N in key compartments (that is, nutrients, detritus, organisms) were quantified, and the amount of labeled N entering the compartments was analyzed. These data were used to calculate...
The inhibition of calcium carbonate formation in aqueous supersaturated solutions. Spontaneous precipitation and seeded crystal growth.
P.G. Klepetsanis, A. Kladi, T. Ostvold, C.G. Kontoyiannis, P.G. Koutsoukos, Z. Amjad, M.M. Reddy
2000, Book chapter, Advances in Crystal Growth Inhibition Technologies
Calcite crystal growth rate inhibition by aquatic humic substances.
M.M. Reddy, A.R. Hoch
2000, Book chapter, Advances in Crystal Growth Inhibition Technologies
Strategic science plan Salton Sea restoration project
Salton Sea Science Subcommittee
2000, Report
The Salton Sea is an ecosystem in peril. Its prehistory consists of a series of intermittent lakes dependent on infrequent flooding of the Colorado River, while the modern Salton Sea originated from the desire to harness the flow of the Colorado River for irrigation. What began as an accident of...
Biological characterisation of Sarcocystis neurona isolated from a Southern sea otter (Enhydra lutris nereis)
D. S. Lindsay, N. J. Thomas, J. P. Dubey
2000, International Journal for Parasitology (30) 617-624
Sarcocystis neurona was isolated from the brain of a juvenile, male southern sea otter (Enhydra lutris nereis) suffering from CNS disease. Schizonts and merozoites in tissue sections of the otter’s brain reacted with anti-S. neurona antiserum immunohistochemically. Development in cell culture was by endopolyogeny and mature schizonts were first observed at 3 days...
The roles of optimism in conservation biology
Erik A. Beever
2000, Conservation Biology (14) 907-909
No abstract available....
The presence of high-affinity, low-capacity estradiol-17β binding in rainbow trout scale indicates a possible endocrine route for the regulation of scale resorption
Petra Persson, J. Mark Shrimpton, S. D. McCormick, Bjorn Thrandur Bjornsson
2000, General and Comparative Endocrinology (120) 35-43
High-affinity, low-capacity estradiol-17β (E2) binding is present in rainbow trout scale. The Kd and Bmax of the scale E2 binding are similar to those of the liver E2 receptor (Kd is 1.6 ± 0.1 and 1.4 ± 0.1 nM, and Bmax is 9.1 ± 1.2 and 23.1 ± 2.2 fmol × mg protein-1, for scale and liver, respectively), but...
Wisconsin: A summary of cooperative water-resources investigations 2000
Water Resources Division, U.S. Geological Survey, Wisconsin Department of Natural Resources
2000, Report
The objectives of this study are to provide continuous discharge records for selected rivers at specific sites to supply the needs for regulation, analytical studies, definition of statistical properties, trends analysis, determination of the occurrence, and distribution of water in streams for planning. The project is also designed to determine...
Dating marine terraces with relative-age and correlated-age methods
D.R. Muhs
J.S. Noller, J.M. Sowers, W. R. Lettis, editor(s)
2000, Book chapter, Quaternary Geochronology: Methods and Applications, AGU Reference Shelf, vol. 4
Macromoths of northwest forests and woodlands
Jeffrey C. Miller, Paul C. Hammond
2000, Report
The macromoths are a group of families within the order Lepidoptera. The macromoths in the woodlands and forests of the Pacific Northwest are represented by 1,200 species in 12 families: Arctiidae, Dioptidae, Drepanidae, Epiplemidae, Geometridae, Lasiocampidae, Lymantriidae, Noctuidae, Notodontidae, Saturniidae, Sphingidae, and Thyatiridae. In addition to the macromoths, the Lepidoptera...
Frequency dependent Lg attenuation in south-central Alaska
D.E. McNamara
2000, Geophysical Research Letters (27) 3949-3952
The characteristics of seismic energy attenuation are determined using high frequency Lg waves from 27 crustal earthquakes, in south-central Alaska. Lg time-domain amplitudes are measured in five pass-bands and inverted to determine a frequency-dependent quality factor, Q(f), model for south-central Alaska. The inversion in this study yields the frequency-dependent quality...
Water Resources Data - New Jersey, Water Year 1999, Volume 3, Water-Quality Data
M.J. DeLuca, K.M. Romanok, M.L. Riskin, G.L. Mattes, A.M. Thomas, B.J. Gray
2000, Water Data Report NJ-99-3
Water-resources data for the 1999 water year for New Jersey are presented in three volumes, and consists of records of stage, discharge, and water quality of streams; stage and contents of lakes and reservoirs; and water levels and water quality of ground water. Volume 3 contains a summary of surface...
Accuracy assessment for the U.S. Geological Survey Regional Land-Cover Mapping Program: New York and New Jersey Region
Zhi-Liang Zhu, Limin Yang, Stephen V. Stehman, Raymond L. Czaplewski
2000, Photogrammetric Engineering and Remote Sensing (66) 1425-1438
The U.S. Geological Survey, in cooperation with other government and private organizations, is producing a conterminous U.S. land-cover map using Landsat Thematic Mapper 30-meter data for the Federal regions designated by the U.S. Environmental Protection Agency. Accuracy assessment is to be conducted for each Federal region to estimate overall and...
Effects of the Paradox Valley Unit on dissolved solids, sodium, and chloride in the Dolores River near Bedrock, Colorado, water years 1988-98
Kenneth R. Watts
2000, Water-Resources Investigations Report 00-4011
During 1999, a study was conducted by the U.S. Geological Survey (USGS) in cooperation with the Bureau of Reclamation to evaluate the effect of the Paradox Valley Unit on dissolved solids, sodium, and chloride in the Dolores River downstream from the Paradox Valley Unit. This report describes this evaluation and...
