Most American and European gold jewellery is made of an alloy of gold, the purity of which is stated in karats, indicated by a number followed by the letter K. American gold jewellery must be of at least 10K purity ( 41. 7 % pure gold ), ( though in the UK the number is 9K ( 37. 5 % pure gold ) and is typically found up to 18K ( 75 % pure gold ).

Most nations abandoned the gold standard in the 1930s.

Most silver is produced as a byproduct of copper, gold, lead, and zinc refining.

Most were perfectly aware of their chance of finding significant amounts of gold were slim to none, and went for the adventure.

Most of them were brought as contract coolies to build the railroad, but many had come originally in pursuit of gold.

Most sousaphones are manufactured from sheet brass, usually yellow or silver, with silver, lacquer, and gold plating options, much like many brass instruments.

Alberta captured the gold medal in the tournament, with Wickenheiser scoring the game-winning goal and being named the Most Valuable Player of the final game.

Most monetarists oppose the gold standard.

Most recently, the Colosseum was illuminated in gold when capital punishment was abolished in the American state of New Mexico in April 2009.

Most surgeons historically have performed the open procedure, widely considered to be the gold standard.

Most of Guyana's reserves of bauxite, gold, and diamonds are found in this region.

Most of the production occurred before 1868 and much of the placer is now under the streets and buildings of Helena ( but even as late as the 1970s, when repairs were being made to a bank, a vein of placer gold was found under the bank's foundation ).

Most other entries featured variations on the territorial seal, the midnight sun, the northern lights, polar bears, and / or gold pans.

Most of the commercial activity during the territorial period centered on gold mining and the supply of provisions to miners.

Most of the gold was stripped from the mines by 1877, but the town was now established and merchants who came to serve the miners stayed to serve the nearby ranchers.

Most famous of the lifeboatmen was Henry Blogg, who received the RNLI gold medal for heroism three times, and the silver medal four times.

: 1731, 27th, Bartolomeo Crisofani, called Bartolo Padovano, died, famous instrument maker to the Most Serene Grand Prince Ferdinando of fond memory, and he was a skillful maker of keyboard instruments, and also the inventor of the pianoforte, that is known through all Europe, and who served His Majesty the King of Portugal V, who paid two hundred gold louis d ' or for the said instruments, and he died, as has been said, at the age of eighty-one years.

Most aides-de-camp wear a gold pattern aiguillette when acting in their official capacity, however members of St. John Ambulance Canada wear silver aiguillettes consistent with their other accoutrements.

Most of the gold used to mint Finnish gold coins comes from Lapland.

Most commercial mining explosives have detonation velocities ranging from 1800 m / s to 8000 m / s.

Most of Mongolia is covered by discontinuous permafrost ( grading to continuous at high altitudes ), which makes construction, road building, and mining difficult.

Most of the South Korean leftists and communist sympathizers who defected to the North in 1945 – 1953 were also accused of espionage and other crimes and killed, imprisoned or exiled to remote agricultural and mining villages.

Most of the historic metal mining camps of Colorado lie in this area, the most important exception being the Cripple Creek District. Approximate boundaries of the Colorado Mineral Belt, as defined by Tweto and Sims ( 1963 ).

Most price controls were removed, the laws affecting mining and oil exploration were improved, and an investment policy receptive to foreign investment was announced.

Most saltpeter mining in Middle Tennessee occurred during the War of 1812 and the Civil War.

Most saltpeter mining occurred during the War of 1812 and the Civil War.

Most saltpeter mining in Middle Tennessee occurred during the War of 1812 and the Civil War, but the exact date of this operation is unclear.

Most of Sussex County's economy was based on agriculture ( chiefly dairy farming ) and the mining industry.

Most of the immigrants were Italians trying to earn a living coal mining.

Most of the route north of the A5 has since been destroyed, some of it as a result of opencast mining.

Most coal seams are too deep underground for opencast mining and require underground mining, a method that currently accounts for about 60 percent of world coal production.

Most continuous mining machines in use in the US lack the ability to bolt and dust.

Most of the city residents work in the mining industry.

Most of the industry here revolves around mining precious metals as well as the manufacture of drywall and masonry materials.

Most of the water-delivery infrastructure had been destroyed by an 1891 flood, so this later stage of mining was carried on at a much smaller scale in California.

Most mining was very small scale until the mid-18th century,

Most mining and minerals processing wastes contain minerals, such as sulphides, which are formed at higher temperatures and pressures at geological depth.

The two countries have also agreed to reciprocal Most Favoured Nation status in private education, engineering services, environmental protection, mining services and information technology.

Most mining draglines are not diesel-powered like most other mining equipment.

Most jobs were in the agricultural area with mining work locally in the Erewash Valley coalfield.

Most of the economic activity was centered in the mining centers of the west and the main source of income of the city was agriculture.