The two major phases were that the individual miners would work at the steam bed or the surface soil and the big companies took over, just to mine underground.<span />
We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the Pursuit of Happiness--That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent ...
C. Suburban area is the appropriate answer
Remember:
Rural: In the countryside
Urban: In the city
Suburban: In between
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