somsrinamwong

Match- making: a noble profession

It is firmly believed that humans are made in pairs. The only task left on humans is to find the right match. Human being is someone who constantly needs a companion. An emotional support or a confidant is what we always look out for, because we can expre... Read >

precaution against mine gas

For every ton of coal removed from the working face, anything up to 200 m3 (7000 ft3) of mine gas is released; the average amount in the Ruhr coal-mining district is 30 m3 (about 1000 ft3). This gas consists of hydrocarbons, chiefly methane (CH4) and is k... Read >