What is fracking and why is it controversial? - BBC News
Oct 15, 2018· The process can be carried out vertically or, more commonly, by drilling horizontally to the rock layer, which can create new pathways to release gas or used to extend existing channels.Drilling Methods Used in Coal Mines | Geology for Investors,Oct 17, 2019· Additionally, exploration drilling is used to identify or confirm the location of faults, folds, dikes, sills, and other geologic features that may influence how the coal is ultimately mined. As mining progresses from the initial exploration phase to the latter stages of exploration and into production, a higher level of detail about the site,Coal Exploration Program,Coal companies may apply for exploration programs without having the coal rights, but most companies do have these rights before applying. We recommend applicants read Manual 008: Oil Sands and Coal Exploration Application Guide , which details our application requirements, processes, and timelines for all coal exploration programs.