Converts dirt and water into materials or commodities.

Base busy seconds:	400 if fishing on shoal.	600 if fishing on sea.	800 if fishing on ocean.
Danger:	Slight.
Required pieces:	Machine-fishing or tool.
Required skill:	Fishing.
Required appearance:	Laborer.
Pollution created:	Same number as materials or commodities fished.
Waste created:	Same number as materials or commodities fished.