Complex sentence: The mining and quarrying industries became major employers, and limestone, lead, jasper and manganese were exported, and there are the ruins of an old pier running out to sea at Porth Simdde, which is the local name for the west end of Aberdaron Beach.
Split into simpler sentences: The mining and quarrying industries became major employers, and limestone, lead, jasper and manganese were exported. There are the ruins of an old pier running out to sea at Porth Simdde, which is the local name for the west end of Aberdaron Beach.