Sexual inter course is good for health. Its like exercise. It awakens the muscles and blood pumps faster. They also say the hormones released into your brain make you smarter. Intercourse can also be bad if your partner has disease. Hope this answer helps. And don't judge me
Coal seams are far deep underground to be considered for opencast minings. These coal seams require underground mining. Since it is too deep underground, it can be used for mapping and correlation of sedimentary rocks or as a key bed.