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The stone is first examined to determine the direction of the grain and to identify any potential defects. After the location of the intended split is chosen, a line is scored on the surface of the stone. A number of holes are then cut or drilled into the stone face along the scored line approximately 10 to 20 centimetres (3.9 to 7.9 in) apart.
At least some of the iron artifacts were made of meteoric iron. [2] [3] The gold pieces include eleven bowls, three bottles and 28 bracelets. The iron pieces are the oldest found in the Iberian Peninsula and correspond to a stage in which iron was considered to be a precious metal, and so was hoarded.
Charles-André van Loo gives greater prominence to the figures in his Mercure présentant des haches au bûcheron in the Hôtel de Soubise. [7] In this the god hovers in mid-air and presents the axes to the surprised and kneeling woodman. Illustrations of the fable on English chinaware draw on the woodcut in Samuel Croxall's edition of Aesop. A ...
The hoard includes almost 4,600 items and metal fragments, [8] [1] totalling 5.094 kg (11.23 lb) of gold and 1.442 kg (3.18 lb) of silver, with 3,500 cloisonné garnets [6] [9] and is the largest treasure of Anglo-Saxon gold and silver objects discovered to date, eclipsing, at least in quantity, the 1.5 kg (3.3 lb) hoard found in the Sutton Hoo ship burial in 1939.
In 1985 there was also a find of Romano-British jewellery and raw materials buried in a clay pot in AD 155, the Snettisham Jeweller's Hoard.Though it has no direct connection with the nearby Iron Age finds, it may be evidence of a long tradition of gold- and silver-working in the area.
A widely used temperature-compensated cut of quartz is the AT-cut. Careful control of temperature and stress is essential in the operation of the QCM. AT-cut crystals are singularly rotated Y-axis cuts in which the top and bottom half of the crystal move in opposite directions (thickness shear vibration) [33] [34] during oscillation. The AT-cut ...
Along with other gold-heavy quartz pieces, the gold was first believed to be bits of damaged machinery. A number of days later, the materials were examined and found to be full of gold. The “Crown Jewel” was the largest of the pieces, weighing in at 60 lb troy (22.4 kg). [4] The finding of the gold was reported by The National Enquirer. [5]
The gold was brought to the surface as small particles embedded in lumps of quartz. The quartz was then crushed into a fine dust by stamping batteries in a stamp mill. A stamp battery contained a row of stamps. On the bottom of each stamp was a heavy piece of iron or steel. Each battery was driven by a cam shaft which was turned by a water ...