the degree of arterial disease in the lower extremities is often classified into four categories normal 0 % stenosis 1 49 % stenosis 50 99 % stenosis and total occlusion 100 % stenosissome laboratories further differentiate between 50 74 % stenosis and 75 99 % stenosishe degree of arterial disease in the lower extremities is often classified into four categories normal 0 % stenosis 1 49 % stenosis 50 99 % stenosis and total occlusion 100 % stenosis
Land Rush of 1889. The Oklahoma Land Rush of 1889 was the first land rush into the Unassigned Lands. The area that was opened to settlement included all or part of the present-day Canadian, Cleveland, Kingfisher, Logan, Oklahoma, and Payne counties of the US state of Oklahoma.
Miners extracted more than 750,000 pounds of gold during the California Gold Rush. Just days after Marshallâs discovery at Sutterâs Mill, the Treaty of Guadalupe Hidalgo was signed, ending the Mexican-American War and leaving California in the hands of the United States.hough gold mining continued throughout the 1850s, it had reached its peak by 1852, when some $81 million was pulled from the ground. After that year, the total take declined gradually, leveling off to around $45 million per year by 1857.