With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Wyatt Earp worked to do anything except extract minerals from a seam.
text_B: Mining is the extraction of valuable minerals or other geological materials from the earth usually from an orebody , lode , vein , seam , reef or placer deposits .. lode. lode. vein. vein ( geology ). seam. coal mining. reef. quartz reef mining. These deposits form a mineralized package that is of economic interest to the miner .. Ores recovered by mining include metals , coal , oil shale , gemstones , limestone , chalk , dimension stone , rock salt , potash , gravel , and clay .. metals. Metal#Extraction. coal. Coal mining. oil shale. oil shale. limestone. limestone. chalk. chalk mining. dimension stone. dimension stone. rock salt. Sodium chloride. potash. potash. gravel. gravel. clay. clay. Mining is required to obtain any material that can not be grown through agricultural processes , or created artificially in a laboratory or factory .. artificially. Chemical synthesis. Mining in a wider sense includes extraction of any non-renewable resource such as petroleum , natural gas , or even water .. non-renewable resource. non-renewable resource. water. fossil water. Mining of stones and metal has been a human activity since pre-historic times .. pre-historic. Prehistory. Modern mining processes involve prospecting for ore bodies , analysis of the profit potential of a proposed mine , extraction of the desired materials , and final reclamation of the land after the mine is closed .. ore. ore. prospecting. prospecting. reclamation. mine reclamation. Mining operations usually create a negative environmental impact , both during the mining activity and after the mine has closed .. Hence , most of the world 's nations have passed regulations to decrease the impact .. Work safety has long been a concern as well , and modern practices have significantly improved safety in mines .. Work safety. Mine safety. Levels of metals recycling are generally low .. metals. Metal#Extraction. recycling. recycling. Unless future end-of-life recycling rates are stepped up , some rare metals may become unavailable for use in a variety of consumer products .. metals. Metal#Extraction. recycling. recycling. Due to the low recycling rates , some landfills now contain higher concentrations of metal than mines themselves .. recycling. recycling
related.