Minerals and mining museum is long and narrow in order to

The correct explanation to this is:

The minerals and mining museums is long and narrow in order to "take advantage of orientation and cross ventilation".

When the museum is narrow, this makes the skin which is separate from the structural grid seems to be alive in its sensitivity to the context. Additionally, the rammed-earth walls fitted with wind traps keep the interior space about 10 degrees Celsius cooler than the air outside.