This action improves the selected piece by the same amount as products used.

Base busy seconds:	300 on barren, bosk, meadow, plain or steppe.	600 on desert or forest.	900 on jungle, lode, marsh, shoal or swamp.	1200 on sea.	1500 on ocean.
Danger:	Low.
Required pieces:	Applicable machine or tool.	Same number of products as machine requires or 1 product for a tool.
Required skill:	Constructing.
Required appearance:	Laborer.
Pollution created:	Same as the number of products used.
Waste created:	Same as the number of products used.