View allAll Photos Tagged Metallic
pont transbordeur au dessus de la Charente
transporter bridge over Charente (France)
fr.wikipedia.org/wiki/Pont_transbordeur_de_Rochefort
*SURLY* steamroller complete bike
BLUE LUG custom
SPEC
Frame: *SURLY* steamroller frame&fork set BLUE LUG CUSTOM COLOR (green metallic)
Wheels: *ALEX RIMS* × *SURLY* track hub
Tire: *PANARACER* buster x tire (black)
Bashguard: *SALSA CYCLES*
Freewheel: *ACS* crossfire single freewheel
Headset:*CANE CREEK* ten
Brake:*DIA-COMPE* 610 center pull brake
Handle: *SALSA CYCLES* moto-ace bell lap
Brake Lever: *TEKTRO*
*FIZIK* microtex bartape (gray suede)
Saddle: *WTB*
Saddle bag: *KRIEG* saddle bag (africa)
(ink illustration by Buck O'Donnell in 1967; public display, World Museum of Mining, Butte, Montana, USA)
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The town of Butte, Montana (pronounced “byoot”) is known as the “Richest Hill on Earth” and "The Mining City". The Butte Mining District has produced gold, silver, copper, molybdenum, manganese, and other metals.
The area's bedrock consists of the Butte Quartz Monzonite (a.k.a. Butte Pluton), which is part of the Boulder Batholith. The Butte Quartz Monzonite ("BQM") formed 76.3 million years ago, during the mid-Campanian Stage in the Late Cretaceous. BQM rocks have been intruded and altered by hydrothermal veins containing valuable metallic minerals - principally sulfides. The copper mineralization has been dated to 62-66 million years ago, during the latest Maastrichtian Stage (latest Cretaceous) and Danian Stage (Early Paleocene). In the supergene enrichment zone of the area, the original sulfide mineralogy has been altered.
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From exhibit signage:
Why do miners drill?
Drilling holes allow explosives to be placed and detonated inside solid rock to break it loose from the world and into pieces.
Iron tools, like hammers, picks, and chisels have been used to mine since the beginning of the Iron Age, about 2000 B.C. There were no explosives, so rock was simply beaten to pieces or wedged apart. Oddly enough, it took over 300 years after the invention of gunpowder before it was used to break rocks. Even then, for may years it was only used in natural cracks and fissures.
The first known use of drilled holes filled with gunpowder to break rock was in Germany in 1613. It was used exclusively for 250 years and continued to be used in coal mining and other special applications well into the 20th Century.
Unbelievably, pure liquid nitroglycerine, one of the most sensitive and unstable explosives known, was used extensively for rock blasting after the American Civil War. Both manufacturing and transportation were extremely hazardous. The slightest impurity or error could cause a batch to explode when the chemicals were combined. It was hauled around in bone-jarring wagons on rough roads. Documented cases tell of wagonloads rolling down mountains without detonating, but others that exploded from an insignificant cause, like a kid throwing a rock.
Alfred Nobel, the creator of the Nobel Prize, invented dynamite in 1868, using an absorbent material to de-sensitize nitroglycerine. He also invented the blasting cap to reliably set it off. The first dynamite plant in the United States was built in San Francisco in 1870, but it did not come into common use for nearly ten years until after the manufacturing and transportation methods were perfected.
Hand Drilling
For 250 years, strong men swinging hammers against the iron drills was the only means of drilling holes in rock. One man drilling alone was called "single-jacking", while teams of two ore more, using heavier hammers, was "double-jacking". It was slow, hard, dangerous work with only oil lamps and candles for light. Buck O'Donnell's drawings show the drillers at work, but the white pages do not convey doing it in smoky, dusty, near-darkness and stifling heat.
[A] granite block [was] a contest stone. Drillers would compete in front of huge crowds for the title and prestige of drilling the deepest hole in fifteen minutes. Butte miners Walter Bradshaw and Mike McNichols hold the world's record for double-jacking, just shy of four feet.
However, two ordinary drillers working 10-12 hour shifts, day after day, year after year, drilled only four to six inches in hard rock during the same 15 minutes. Advancing a mine tunnel four feet took about a thousand inches of drilling, over eight days of constant drilling. Taking advantage of natural fractures was an important skill the best miners learned to cut this time down, but tunnel progress still averaged less than a foot a day.
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Caption accompanying illustration:
SINGLE JACKING
Single jacking on upper holes was tiring on the hand and arm. To lessen the fatigue, old miners used a thong on the hammer handle which permitted the opening and relaxing of the hand on the back stroke.
Heavily processed Cassini image of Saturn's south pole. I used an image of Arabic calligraphy as the seed image.
Not as sharp as I would like it to be but this is one of the few photos I managed to get of this bee. I thought it was a large blow fly when I first heard it but then realised what it was when I saw it. I have seen them in a text book but notin the wild. They are fairly large bee, metallic green colour and pretty quick
a day and 60 replies later, finally figured out something metallic and interesting enough:D
for Our Daily Challenge: Metallic
I new version of my paper ball ornaments. These are more like pillows that spheres. I like the shape and the gold metallic paper adds an old fashioned look to them.
Large stocks of stainless steel/mild steel hose in sizes DN06 - DN200 are held in large volumes, with a full selection of fittings available. These fittings include threaded, flanged, cam and groove.
Stainless steel metallic hose assemblies are a popular solution when higher pressures are involved. The stainless steel convoluted liner is robust enough to cope with -200 Degree C to +600 degree C temperatures, making it ideal for appliactions where pump connectors, gas & fan coil hoses are required.
Outfits under £50 at www.retrochick.co.uk/retroblog
Silver Oasis Prom Dress
Bronze Mules
Vintage Sequin Clutch
for macromondays theme "metallic." This is a metal stud bracelet from Halloween and I put it on my guitar to see if I could get some interesting reflective patterns.
This is after steel wool and polishing the surface with aluminum wheel polish. Might try silver polish next to see how it comes out.
The skin of American Folk Art Museum in NYC by Architects: Tod Williams and Billie Tsien. Metal panels of Tombasil ( a form of white bronze), clad the building.
Setra S 515 HDH TopClass 500, Exterieur, peach metallic, OM 471 mit 350 kW (476 PS), 12,8 L Hubraum, 8-Gang Mercedes PowerShift, LED-Scheinwerfer, Länge/Breite/Höhe: 12.495/2.550/3.880 mm, Bestuhlung: 1/40 // Setra S 515 HDH TopClass 500, Exterior, peach metallic, OM 471 rated at 350 kW/476 hp, displacement 12.8 l, 8-speed Mercedes PowerShift transmission, LED Headlamps, length/width/height: 12495/2550/3880 mm, seating: 1/40.
I love these threads! From my blog post "How to stitch with metallic threads" here www.mrxstitch.com/how-to-stitch-with-metallic-threads/
Just an attempt to get creative in my compositions at the concert hall. I like that one can quite literally walk around this thing all day and take different photos as the light changes. I also like that minimal post-processing is usually needed because getting the composition right in the camera is actually not that difficult to do.