The earliest industrial monuments in Britain are the Neolithic flint mines, dating to around 4000 bce . These mining shafts, which tunnel deep into chalk geologies, evidence extremes that ancient Britons were willing resort order obtain valuable raw materials. Numerous scholars, marvelling at excavation processes and hand tools used aid extraction of flint, have studied flint-mining industry. R...

To solve the problems of high labor costs, a low weeding rate and seedling injury in direct seeding rice fields, this paper presents reciprocating inter-row machine for strip-seeded rice. The uses combination wheels shovels to improve efficiency between rows. Its mechanism was designed optimized. simulation model teeth–paddy soil interaction established EDEM. structural parameters teeth were op...

One of the key issues in mining is the hauling system. Truck and shovels are the most widely used transportation equipment in mines. In this paper, a two-phase simulation-based optimization is presented to maximize utilization of hauling system in the largest Iranian open-pit copper mine. In the first phase, The OptQuest for Arena software package was used to solve the optimization problem to p...

Using direct percussion, language-competent bonobo-chimpanzees Kanzi and Pan-Banisha produced a significantly wider variety of flint tool types than hitherto reported, and used them task-specifically to break wooden logs or to dig underground for food retrieval. For log breaking, small flakes were rotated drill-like or used as scrapers, whereas thick cortical flakes were used as axes or wedges,...

Advances in artificial intelligence and robotics will have significant implications for evolving economic systems. This has always been the case, and the repetitive nature of most jobs has historically been a good match with the capabilities of the average worker. Technology has, of course, often disrupted and even destroyed whole industries and employment sectors. In the U.S., the mechanizatio...