Abutment - In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back abutment, ...
Pandemic 2: Disease Mutation. Pandemic 2 is a disease game that allows more flexibility in creating a plague, including whether you want to be a bacteria, parasite or virus. Each disease has its own strengths and weaknesses. Note: See below game for instructions and tips. (And be sure to use hand sanitizer when youâre done playing.)
A pandemic (from Greek Ïá¾¶Î½ pan all and Î´á¿Î¼Î¿Ï demos people) is an epidemic of infectious disease that has spread through human populations across a large region; for instance multiple continents, or even worldwide. An H3N2 caused about 34,000 deaths in the United States. 2  This virus was first detected in Hong Kong in early 1968, and spread to the United States later that year. 3  This pandemic of 1968 and 1969 killed approximately one million people worldwide.