Appendix H 



Conversion Table and Glossary 



Conversion Table for Distances, 



inch = 2.54 centimeters 



square inch = 6.45 square centimeters 



cubic inch = 16.39 cubic centimeters 



centimeter = 0.39 inches 



square centimeter = 0.15 square inches 



cubic centimeter = 0.06 cubic inches 



foot = 0.30 meters 



square foot = 0.09 square meters 



cubic foot = 0.03 cubic meters 



meter = 3.28 feet 



square meter = 10.76 square feet 



cubic meter = 35.31 cubic feet 



yard = .91 meters 



square yard = 0.84 square meters 



cubic yard = 0.76 cubic meters 



meter = 1.09 yards 



square meter = 1.20 square yards 



cubic meter = 1.31 cubic yards 



Areas, Volumes, and Weights 



1 are = 100 square meters = 119.6 square yards 



1 statute mile = 0.86 nautical miles 



1 square statute mile = 0.74 square nauticEil miles 



1 statute mile = 1.61 kilometers 



1 square statute mile = 2.59 square kilometers 



1 nautical mile = 1.16 statute miles 



1 square nautical mile = 1.35 square statute miles 



1 nautical mile = 1.85 kilometers 



1 square nautical mile = 3.43 square kilometers 



1 kilometer = 0.62 statute miles 



1 square kilometer = 0.39 square statute miles 



1 kilometer = 0.54 nautical miles 



1 square kilometer = 0.29 square nautical miles 



1 short ton = 2000 pounds = 0.91 metric tons 

 1 long ton = 2240 pounds = 1.02 metric tons 



1 metric ton= 1.10 short tons = 0.98 long tons 



Glossary 



Abyssal Plain: A flat region of the deep ocean floor. 



Acid-Grade Phosphate Rock: Phosphate rock that can 

 be used directly in fertilizer plants. A comparatively 

 pure grade of phosphate rock that assays at 3 1 per- 

 cent phosphorous pentoxide (P2O5), and is also called 

 "fertilizer-grade" rock. 



Acoustic: Of or relating to sounds or to the science of 

 sounds. 



Active Margin: The leading edge of a continental plate 

 characterized by coastal volcanic mountain ranges, 

 frequent earthquake activity, and relatively narrow 

 continental shelves. 



Alluvial Deposits: Secondary deposits derived from the 

 fragmentation and concentration of chromite minercds 

 from primary stratiform or podiform deposits. Allu- 

 vial deposits are either placers, e.g., beach sands 

 which occur in Oregon and stream sand deposits in 

 the eastern States, or laterites, which occur in north- 

 west California and southwestern Oregon. 



Anatase: One of two major crystalline modifications of 

 titanium dioxide (Ti02), the other being rutile. 



Argon-Oxygen-Decarburization (AOD); Vacuum- 

 Oxygen-Decarburization (VOD): Processes for 

 removing carbon from molten steel without oxidiz- 

 ing large amounts of valuable alloying elements, espe- 

 cially chromium. AOD and VOD enable the use of 

 lower grade, lower cost high-carbon ferrochromium. 



Attenuation: A reduction in the amplitude or energy 

 of a seismic or sonar signal, such as produced by 

 divergence, reflection and scattering, and absorption. 



Barrier Island: A long, narrow, wave-built sandy island 

 parallel to the shore and separated from the main- 

 land by a lagoon. 



Bathymetry: The measurement of depths of water in 

 the oceans. Also, the information derived from such 

 measurements. 



Beneficiation-Grade Phosphate Rock: Phosphate rock 

 that assays at 10 to 18 percent phosphorous pentox- 

 ide (P2O5) and requires the removal of hydrocarbons 

 and other impurities before processing in a chemical 

 plant. It may be upgraded to acid grade or furnace 

 feed quality. 



Beneficiation: Improvement of the grade of ore by mill- 

 ing, flotation, gravity concentration, or other 

 processes. 



Benthos: the animals living at the bottom of the sea. 



Bioassay: a method for semi-quantitatively measuring 

 the effect of a given concentration of a substance on 

 the growth of a living organism. 



Biomass: The amount of living matter in a community 

 or population of a single species. (It may be meas- 

 ured either by wet, dry, or ash-free [burned] weight.) 



Calcium Phosphate: Any of the calcium orthophosphates 

 that may be used for fertilizers, plastics stabilizers, 

 pharmaceuticals, animal feeds, and toothpastes. They 

 include acid calcium phosphate, calcium dihydrogen 



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