A spasm is a sudden, involuntary contraction of a muscle, a group of muscles, or a hollow organ such as a heart, or a similarly sudden contraction of an orifice.It most commonly refers to a muscle cramp which is often accompanied by a sudden burst of pain, but is usually harmless and ceases after a few minutes. spasm is a sudden, involuntary contraction of a muscle, a group of muscles, or a hollow organ such as a heart, or a similarly sudden contraction of an orifice.
Top 10 largest Cement Producing Countries in the World. China has the first stage in the list of cement producing countries. They produce more than 2482 million tonnes. It is mainly used for construction and china is highly populated.
John K. Shinn, secretary and treasurer of the company, advertised his cement as equal in quality to the best brands of English, German and French Portland cements. Cement-making came to Wampum in 1874 and was a large part of the community until the plant closed in March 2010. The Shinn brothers came to Wampum and founded Wampum Cement and Lime Co., one of the first American cement plants.