Backlog is a measure of the total value of signed construction contracts to be executed in the future, as of a particular date. Backlog for subsidiaries is consolidated in the same manner as their financials. Backlog by division and project is shown below, along with the total contract value.

As of September 30, 2012		Current Backlog	Estimate Termination Date	Total Contract (Ps. millon)	Currency (1)	Project Progress ( %)
Civil Constrution	87%	36,996
Mitla Tehuantepec Highway		5,576	4Q12	5,591		0
Barranca Larga Ventanilla Highway		5,237	3Q14	5,255		0
Package Highways Sonora State		2,938	2Q19	2,985		2
Eastern Discharge Tunnel		2,418	3Q14	7,270		67
Lazaro Cardenas Container Terminal TEC II		2,272	3Q14	2,285		1
La Yesca HP		2,265	4Q12	16,529	USD	86
Tepic Bypass		2,211	2Q14	2,222		1
Agua Prieta Water Treatment Plant		1,884	4Q13	2,211		15
Avenida Domingo Diaz, Panama		1,690	3Q14	1,994	USD	15
Corredor Norte Highway, Panama		1,356	2Q13	1,471	USD	8
Extension of Playa del Carmen-Mayab		1,283	3Q14	1,283		--
Atlantic Petroleum Terminal, Costa Rica		733	1Q15	942	USD	22
Northern Interceptor Tunnel Rio Medellin, Colombia		700	4Q13	867	EUR/USD	19
Autovia Urbana Sur		693	1Q13	5,445		87
Atotonilco Water Treatment Plant		632	4Q14	1,880		66
El Realito Aqueduct		582	2Q13	1,042		44
Rodio Kronsa		511	--	--	EUR/USD	--
Other Civil Construction Projects		4,014	--	--
Industrial Construction	13%	5,492
Salina Cruz Clean Gasoline Plant		1,111	1Q14	2,583	USD/ MXN	57
Tula Refinery Engineering		770	3Q13	807	USD/ MXN	5
Minatitlan Clean Gasoline Plant		671	3Q13	1,644	USD/ MXN	59
Ayatsil C Platform		592	4Q13	606	USD/ MXN	2
AHMSA		588	1Q13	3,309	USD/ MXN	82
Madero Clean Gasoline Plant		522	3Q13	2,444	USD/ MXN	79
Other Industrial Construction Projects		1,238
Total		42,488
Contracted Mining and Other Services		6,409

(1) Only projects in foreign currency identified; all other projects in mexican pesos

Construction Backlog

Construction Backlog