What tools were used in ancient manual mining

1. 1. Crane
is used for the same purpose as crane. Fixed installation in the site, there is a certain activity space, through the crane moving on the fixed track installed, to achieve the purpose of lifting the weight< In order to avoid the phenomenon of "parachute" sedimentation, degassing tank is added in thickener 2) The feeding pipe is located below the liquid level to prevent gas from entering ring feeding 3) The feeding sleeve moves down, and a receiving plate is set to make the slurry drop evenly and stably, which effectively prevents the phenomenon of turning over caused by the resial pressure of feeding 4) The internal overflow weir is added to make the material flow according to the specified stroke and prevent the phenomenon of "short circuit" 5) The overflow weir is changed into serrated shape to improve the suction phenomenon of local drainage caused by uneven overflow weir 6) The shape of rake teeth is changed from slant to curve, so that the pulp is not only raked towards the center, but also has a force of "overstock" towards the center, which makes the concentration of underflow high and increases the processing capacity

3. The F-axis and g-axis of the main plant logo
is a kind of logo name in the plant, and the specific meaning depends on the plant logo map. Its function is to divide all parts of the plant and play a planning role.

2. Now blockchain is very popular, and many blockchain projects have been or are ready to be invested. Here are some methods to judge the quality of blockchain projects
1. Blockchain correlation analysis
it is up to blockchain experts to judge whether the project can really solve the pain point through blockchain technology
2. Team analysis
analyze the team's professional knowledge, past experience and execution ability
3. Technical analysis
technical experts check the adequacy of all program codes and technical documents
4. Feasibility analysis
analyze its legitimacy, actual implementation plan and potential risks
5. User base
analyze the number of users of existing procts, and user evaluation will also be considered
6. Competitive analysis
evaluate the market structure to find out whether there are challenging competitors on the blockchain
7. Project valuation
analyze project valuation, token issuance structure and income distribution plan
when it comes to project analysis, we can learn about Dr dragon hunt, the first archaeological excavation game with the background of dinosaur resurrection in China. The R & D team, composed of Sichuan Zhong'an Huanyu blockchain technology and the core team of Southwest Jiaotong University blockchain Technology Research Institute, combines blockchain, Internet, Internet of things, artificial intelligence, encryption algorithm, cryptography, network layout, and so on Bio encryption and other technologies are a new force in domestic blockchain projects.

3. Virtual currency refers to non real currency
well known virtual currencies, such as network currency of network company,
Q currency of Tencent company, Q point,
voucher of Shanda company,
micro currency launched by Sina (used for micro games, Sina reading, etc),
chivalrous Yuanbao (used for chivalrous road games),
grain silver (used for bixue Qingtian games),
the popular digital currencies in 2013 are bitcoin, Laite coin Unlimited money, quark money, zeta money, barbecue money, pennies (Internet), invisible gold bar, red money, prime money
at present, there are hundreds of digital currencies issued all over the world. Popular in the circle & quot; The legend of "bitcoin, Wright silver, infinite copper, pennies aluminum".

4. According to the mining objects, the miners can be divided into: 1. The quarrymen are called "stone workers". In the history of the Song Dynasty, the biography of Zhong Shi Heng: "when the earth is cut 150 feet, the stone is the first, and the words of stone workers can not be worn." 2. The craftsmen who make rockery with flower stones are called "mountain craftsmen". Song Zhoumi's Guixin miscellaneous knowledge. Rockery: "those who have a big peak are not specially Marquis, but the workers are from Wuxing, so they are called mountain craftsmen.". 3. The craftsmen who collect clay and make pottery are called "geotechnics" In the book of rites, qulixia: "the sixth work of the emperor, namely: earthwork, metalwork, stonework, carpentry, animal work, grass work, six materials are made by canon."< In ancient times, e to the undeveloped commodity economy and the lack of medical knowledge, there were no workers specialized in collecting herbs. The herbs used in ancient Chinese medicine were generally collected and processed by themselves or disciples, while the folk herbs collected by common people were generally used by themselves. In ancient times, doctors were called doctors or doctors
lumberjack was called "woodcutter" in ancient times. It is said that Gou Jian, the king of Yue, made people go to the mountains to cut wood, but they did not return for a long time. He was called "Muke Yin", so later generations called the lumberjack Muke.

5. In ancient times, the most popular method of panning for gold was digging, sliding and panning<

dig: dig out the gold bearing sand with spade and other tools
Slide: put the ore sand on the wooden chute to slide
panning: panning with gold pots, boxes, stpans, etc. We should pay attention to the essentials and techniques in sand washing to improve the recovery rate of sand gold
"blowing away the yellow sand before gold" is an ancient method of gold panning with wind. Just like the method of sifting the valley in the countryside, gold panning and wind dressing both use the characteristics of large proportion of gold to find out the method of gold separation and accumulate the placer gold bit by bit<

in ancient Chinese traditional culture, the primitive pyrometallurgical process is relatively simple and easy to operate:
put the selected sand gold and ore gold in a fire-resistant crucible, add 10% borax, soda or nitre (for catalysis and purification), and burn them in a blazing charcoal furnace, waiting for the things in the crucible to melt into bright golden water, When boiling and rolling like egg yolk, pour the solution into a conical cylinder with a big mouth and a sharp bottom. After cooling, the contents in the cylinder are separated into layers according to the specific gravity, poured out, and knocked off the resie with a small mallet to get the gold silver alloy (the content of silver and gold is very small). In the next step, the ingot is melted for the second time according to the above method. After melting, the liquid is poured into the cast iron mold of the prepared bar or block, and the ingot is formed after cooling. The gold content is as high as 85% - 95%.

6. If there were, I would have used it a long time ago. Not at the moment.

7. Man,
you go to the
network,
find a gear to download and run the game,
accelerate or decelerate, whatever you want,
accelerate or decelerate can be added to your network speed,
you can't bear the drop line,
decelerate can be reced to half a centimeter when you break your mouse.
it's suitable for all kinds of games,
,

8. In the Luoyang Hotel, find Cheng Ying to buy, that is, mining master there, how many levels of occupation to buy how many tools.

9. With compasses (there are different grades of compasses), first-class prospecting compasses can be bought in grocery stores, and the rest can be bought in consignment stores.
the higher the grade of compasses, the better the digging.
of course, it depends on the character