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With the use of 20-tonne (19.7-long-ton; 22.0-short-ton) freight wagons, 1,600 tonnes (1,570 long tons; 1,760 short tons) heavy coal trains could be formed from the Moravian-Silesian coal regions.
How COVID‑19 vaccines work. The video shows the process of vaccination, from injection with RNA or viral vector vaccines, to uptake and translation, and on to immune system stimulation and effect. Part of a series on the COVID-19 pandemic Scientifically accurate atomic model of the external structure of SARS-CoV-2. Each "ball" is an atom. COVID-19 (disease) SARS-CoV-2 (virus) Cases Deaths ...