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Before the arc welder, man used rivets to connect plates of iron to make a pipe. I have seen 3ft diameter riveted water pipes in this area used for the old gold mines.
Full EXIF Info | |
Date/Time | 20-Dec-2006 13:46:13 |
Make | Canon |
Model | Canon PowerShot Pro1 |
Flash Used | No |
Focal Length | 7.2 mm |
Exposure Time | 1/50 sec |
Aperture | f/2.4 |
ISO Equivalent | |
Exposure Bias | -0.33 |
White Balance | |
Metering Mode | matrix (5) |
JPEG Quality | |
Exposure Program | |
Focus Distance |
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