How a backyard pendulum saw sliced into a Bronze Age mystery | Rc Dth Hammer

The classic tophammer method is renowned for high penetration rates in good drilling conditions and Atlas Copco is developing the method continuously. Exhaustive research into how impact energy can be transmitted into the drill bit in the most efficient way, with least possible stress, has resulted in a new generation of rock drills.

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The scientists sent pulses of laser light through an optical fibre, which was part of a 15 kilometer long cable deployed in 1994, within the telecommunication network on Reykjanes peninsula, SW Island, crossing a well-known geological fault zone in the rift between Eurasian and American tectonic plates. The light signal was analyzed and compared to data sets from a dense network of seismographs. The results amazed even experts: "Our measurements revealed structural features in the underground with unprecedented resolution and yielded signals equaling data points every four meters," says Philippe Jousset from the GFZ. He adds: "This is denser than any seismological network worldwide." After presenting preliminary ideas at several conferences since 2016 Philippe was told that the new method was a ‘game changer for seismology’. Although the method is not new in other applications (it is used for years in boreholes for reservoir monitoring), the team is the first worldwide that carried out such measurements along the surface of the ground for seismological objectives, and with such a long cable.

The MREs for Kalana Main and Kalanako have been updated with the recent Endeavour exploration results. The MREs have utilised the IAMGOLD (2010-12) and SOMIKA (2012-15) exploration results. The drilling and sampling protocols are largely the same and are considered to be suitable for use in a MRE.

Most of Climeworks’s 60 employees work in a big industrial space in downtown Zurich, on two floors of a low-slung building that the company sublets from a German aerospace firm. Manufacturing operations are on the ground floor; the research labs are upstairs, along with a small suite of shared offices, a hallway kitchen and a hangout area. The place has the stark, casual feel of a tech start-up, with one exception: The walls are lined with oversize photos of pivotal moments in Climeworks’s young history — its ungainly early prototypes; the opening of the first Hinwil plant that collected CO₂ for the greenhouse.

In his book Gimme Indie Rock: 500 Essential American Underground Albums, Andrew Earles says that “To outsiders, neophytes and non-fans, the noise-rock subgenre of post-hardcore/indie rock appeared to be a rather one-dimensional, testosterone-fueled boys’ club.” That, of course, isn’t true — which Earles acknowledges. By the nature of being a style of music embraced by outcasts and miscreants, rather than privileged insiders, noise rock has seen a wildly diverse parade of musicians over the years from all corners of the world. And it doesn’t hurt that making noise doesn’t require a major label budget. “It’s easy for anyone to strum open strings while turning a tuning peg or stick screwdrivers under the guitar’s bridge to find an interesting sound,” Sonic Youth’s Thurston Moore told The Guardian in 2017. “You can be experimental without having money.”

In the meantime, the area will be supplied with a mixture of water from Ennerdale and local boreholes.

Best signing: Petrus du Plessis – the double European Cup-winning prop has an alter ego. Donning red Y-fronts and not much else he becomes ‘Borislav’, uploading ridiculous videos of his antics. That messing around will keep team spirit sky-high at Hazelwood – on the field du Plessis is a scrummaging rock too. His prowess there could keep Irish afloat.

The Smart Cities Mission has not visibly improved living conditions or citizens’ participation in urban …

Production models of the Sharp-Hughes Tool Company coned bit became a crucial (and exclusively patented) tool for drilling deeper wells, beginning in Texas and then around the world.

On the aspect of training, Booysen Bore transfers the theoretical and practical class-accredited training provided by qualified Epiroc MQA and MerSETA trainers to their operators.  “We are committed to stimulating development through collaboration with our local communities and we consequently source our operators from the local labour force.” Booysen Bore was instrumental in the development of a small local empowerment company by providing the business with a small part of its core drilling service.

Unfortunately, in a survey in California, 40% of parents believed they had not been provided with enough information about MC to make an informed choice [104]. For parents of boys who were not circumcised, the doctor had not discussed circumcision with them, as opposed to 15% of parents of boys who were circumcised. Twice as many parents would, in retrospect, have wanted their boy to have been circumcised had they known more. After reading information about MC, 86% of parents were in favor of neonatal circumcision [105]. Overall, support was higher among parents born in the USA, but lower among Hispanic parents.