To go faster and deeper will require advances in drilling technologies. Companies are developing drilling equipment that is more stable when breaking through hard rock at high temperatures. Some firms are even aiming to penetrate rock without using standard drills. Quaise, a company with roots at the Massachusetts Institute of Technology (MIT), is using a technology called millimetre wave drilling. The frequency is similar to that of microwaves. Quaise’s application involves “sending electromagnetic waves in the microwave millimetre wave spectrum…
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