During the Tudor period, lead was utilized to build roofs and windows because it was easily mailable and resistive to corrosion. Farmers would mine for lead during the summer months when their crops did not need tending to in order to generate additional income. Mining during the summer months could earn an extra £5.00 which equates to £25,000 as of 2012 when accounting for inflation. Entire families often worked within the mines because 50 barrels worth of ore and soil would be extracted per day to meet the quota of what was required to be profitable. Smelting involved the use of white coal which is effectively dried wood from a kiln and was always setup upon windy hilltops or mountains because the wind would cause the fire blaze with more intensity therefore reaching higher overall temperatures. The best wood to make white coal is oak. Kilns must be airtight, so gaps were filled with clay. Knowing a kiln to be airtight was easily verifiable by searching for smoke as if smoke only came out of only the front entrance, the kiln was considered airtight. Ore was smashed into small pieces to help it smelt more rapidly which yielded approximately an 80% return upon investment. Metals were then refined using a secondary kiln, and smelted to remove any ash or impurities. The first burn removes ore from the rock, and the second burn removes impurities with the main impurity being sulphur. Molds were constructed using sand and wood to create divots which allowed the ore to be molded into blocks much the same as a modern day bar of gold. The sand gives the mold an indentation which archeologists use to identify Medieval bars of smelted ore
Category: Montology
Civilizations Mastery of Metal By Manipulating Fire
The more carbon rich a fuel is, the more heat it produces. Typical wood fires burn at 700 degrees Celsius, however 6000 years ago, ancient people discovered the adaptation of burning wood in a low oxygen environment, only partially burning, but in doing so creating a much purer carbon rich fuel; charcoal. Charcoal can burn at temperatures upwards of 1100 degrees Celsius, hot enough to melt ore out of rock. The mastering of metal produced tools, finance, and weaponry, forever changing the evolutionary story of human beings. By the Middle Ages, the production of charcoal for metal smelting and metal work was a major industry
The Discovery of the Route Which Allowed Explorers to First Climb Mount Everest
British born George Mallory, the person tasked with heading the team who first set out to climb Mount Everest in 1921, overlooked what is now used as the doorway to Mount Everest, the entry point of East Rongbuk Glacier. When Mallory first viewed this entry point, a narrow cliff within the mountainside wall, he dismissed it as too modest and small to warrant further investigation. Canadian Oliver Wheeler however was educated in the science of topography and geography from his father who surveyed the Canadian west coast Rocky Mountains and because of this, he did not view the dimensions of the cut to be as important as the pulse of water pouring out of that cut every afternoon. This enormous volume of expelled water signaled to Wheeler that a glacier had to be present at the head of the valley as it was the only possible explanation which fit. On July 30, 1921, Wheeler set out for the East Rongbuk Glacier and as he anticipated, he was able to make it up the ice field within 6 short days. As the East Rongbuk Glacier widened and curved around, it came directly to the base of the North Col, a sharp edged pass carved by glaciers in the ridge connecting Mount Everest and Changtse (pronounced “chang-see”). This opening became the key to unlocking Mount Everest and is still leveraged by climbers into the modern day. 6 days after setting out, on August 4, 1921, Wheeler sent a dak runner, which is essentially a Tibetan messenger, with a sketched map indicating his discovered exploit of the armor of Mount Everest for Mallory
Technology Provided by the Iron Age
Iron was favored over bronze throughout history because it could be formed into thin and detailed structures which could not be achieved when casting bronze. This is important because it meant that iron blades could be worked and therefore sharpened to a much more refined degree than bronze which was brittle. Iron is also more readily found, a metal which could be found locally around the world and did not depend upon an immense, trading network. By 400 B.C., iron tools and iron objects became ubiquitous throughout various civilizations with the effects of this new technology felt upon the cutting edge of agricultural technology. Iron is more practical than bronze as bronze needs to be melted down and recast if broken in opposition to iron which could be taken to a fire, hit with a hard object, and repaired to the point at which it becomes functional once again. These aspects helped iron to gain favor worldwide as the metal of choice for building and advancing society. As the Iron Age progressed, knowledge about where iron deposits are found became better understood with more and more iron becoming available upon the open market. This is important because the more readily available a particular type of artifact is, the younger the item typically presents as. As time progressed, iron became akin to plastic of the modern day, being cost effective and readily available to manufacture virtually anywhere. Iron tipped wooden plows allowed for more difficult soils to be farmed, which meant that more land could be cultivated making iron truly an agricultural and commercial revolution in the ancient world. Despite lasting for a period of 1000 years, the Bronze Age was quickly replaced with the more effective and efficient Iron Age. The issue of total replacement is complicated as bronze was not only used for tool making, it also helped to create an elite class and was used for spiritual and ceremonial objects as well as visual displays of prestige and wealth. Iron tools several hundred years later, failed to achieve the same intrinsic value within society that bronze once had as it was less rare and precious and therefore less valuable. Iron tools however were highly practical unlike their bronze counterparts, a feature which plagued agriculture and society as a whole
The Rationale Behind the President’s Chosen to be Depicted at Mount Rushmore
Mount Rushmore used a combination of dynamiting and jackhammering. It was the largest sculpture of its time. From left to right, George Washington was chosen as the father of the U.S., Thomas Jefferson as the father of U.S. law, Abraham Lincoln as the father of equality for all U.S. citizens, and Theodore Roosevelt who made the U.S. a world power
The Traditional Sherpa’s of Mount Everest
The term “sherpa” is derived from the terms “shyar” (pronounced “shur”) which means “east” and “pa” which means “people” in Nepali. Migrants who populated the region around Mount Everest throughout antiquity came from the Tiber in the east, crossing the Nangpa La, which means “Elder’s Pass” in Nepali, to settle into Solukhumbu (pronounced “solo-koom-boo”), a region in which the minimum altitude is 4000 meters above sea level. Living a nomadic lifestyle is what made the sherpas expertise so desirable to British mountaineers who arrived a few centuries later. British mountain climbers realized the immense value that these expert travelers possessed which is how the relationship of domestic sherpas and foreign alpinists began. Sherpas were and continue to serve as porters and guides for foreign climbers and during the modern day, a sherpa trekking Mount Everest can expect to earn $6000.00 upon an expedition which intends to reach the summit
The Tallest Mountain On Earth
Mauna Kea (pronounced “mah-nah kay-ah”) is the tallest mountain in the world, 1.6 kilometers taller than Mount Everest. The main difference between Mauna Kea and Mount Everest is that Mauna Kea ascends from the ocean, instead of from land as Mount Everest does. Mauna Kea is not only the largest mountain on Earth, it is also the largest land mass in the world
The Oldest Artwork in Human History
Near the Ardeche River (pronounced “arr-desh”) in southern France, less than 0.5 kilometers away, 3 explorers set out a few days before Christmas in 1994. While seeking drafts of air emanating from the ground which would point to the presence of caves, these explorers found a subtle airflow which was blockaded by rocks. The explorers found a narrow shaft which was cut into the cliffside, so narrow in fact that their bodies could just barely squeeze through it. Deep inside the cave the explorers stumbled upon the oldest known cave paintings in human history, twice as old as any other artistic depiction made by human hands. The cave itself had been perfectly sealed for tens of thousands of years which is why this 32,000 year old artwork was found in pristine condition. In honor of the lead discover Jean-Marie Chauvet (pronounced “zhan mah-ree sho-vee”), the cave was named “Chauvet Cave”. The French Ministry of Culture controls all access to the cave, an intervention which was rapidly implemented as this discovery was immediately understood as an enormous scientific find, perhaps one of the greatest anthropological and artistic discoveries ever made. Scientists and art historians are typically the only members of the public permitted access to Chauvet Cave, with archeologists, paleontologists, and geologists being the most common interdisciplinary teams provided entry
Snow in Iran During the Summer
Iran experiences snow during the winter every couple of years and even during the summer on occasion due to the topography and geography of Iran which includes high altitude mountains. Iran is a mountainous state referred to as a “plateau”. Mount Damavand, the highest peak in Iran, is a primary example of Iran’s ability to produce snow. With an elevation of 18,403′ in height, Mount Damavand always has snow to some degree, even if relatively minute, with snow occurring even during the peak summer months of June, July, and August
The Reason Underground Caves Naturally Form
Cave systems form when acidic water etches its way through rock. Rainwater becomes acidic as it takes in carbon dioxide and groundwater can become acidic due to the acids found in nearby soil. Water causes existing cracks within the rock to widen into passages which the water flows through to create even wider channels. Over time caverns begin to form as the rock weakens and falls