Work in Progress, Net (Tables)

12 Months Ended

Dec. 31, 2020

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Summary of Work in Progress

As of December 31, this account comprises:

	Total				Current				Non-current
	2019		2020		2019		2020		2019		2020
Unbilled receivable concessions in progress (a)		23,117		—		—		—		23,117		—
Work in progress (b)		49,457		186,433		49,457		186,433		—		—
		72,574		186,433		49,457		186,433		23,117		—

Summary of Work in Progress Grouped by Main Projects

Below are the work in progress grouped by the main projects:

	2019		2020
Infrastructure
Road operation and maintenance		23,117		—
		23,117		—
Engineering and construction
Engineering and Construction Works — GYM Chile S.p.A.		19,531		97,561
Talara Refinery		20,126		15,468
North Concentrator Plant of Quellaveco		1,033		50,216
Ground transport tunnel of Quellaveco		—		18,485
Others		8,767		4,703
		49,457		186,433
		72,574		186,433