utilities.iowadot.gov - /NHSX-030-6(231)--3H-06/CADD030(231)/Machine_Control_Surfaces/Crossovers/XOver2/TINs/

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 2/21/2018 10:15 AM       233480 prop_surf_subgrade_XOver2.tin
 2/21/2018 10:15 AM       418088 prop_surf_top_XOver2.tin