Free Images: "bestof:...Operations at inlet portal of diversion tunnel No. 2. Invert concrete and trashrack transition base are seen." - NARA - 293643.tif Scope and content Photograph"
"Operations_at_inlet_portal_of_diversion_tunnel_No._2._Invert_concrete_and_trashrack_transition_base_are_seen."_-_NARA_-_293643.tif
"Operations_at_inlet_portal_of_diversion_tunnel_No._2._Invert_concrete_and_trashrack_transition_base_are_seen."_-_NARA_-_293643.jpg
"Forms_for_trashrack_structure_in_place_at_inlet_portal_of_diversion_tunnel_No._3._Port_through_which_tunnel_concrete..._-_NARA_-_293646.tif
"Forms_for_trashrack_structure_in_place_at_inlet_portal_of_diversion_tunnel_No._3._Port_through_which_tunnel_concrete..._-_NARA_-_293646.jpg
"Completed_concrete_tunnel_lining_near_inlet_portal_of_diversion_tunnel_No._4._Coating_of_moisture_reserving_paint_is..._-_NARA_-_293692.tif
"Completed_concrete_tunnel_lining_near_inlet_portal_of_diversion_tunnel_No._4._Coating_of_moisture_reserving_paint_is..._-_NARA_-_293692.jpg
Inlet_portal,_Diversion_Tunnel_No._4,_showing_bulkhead_gate_steel_erected_in_structure_-_NARA_-_293779.tiff
Inlet_portal_of_Diversion_Tunnel_No._3_-_NARA_-_293780.tiff
Inlet_portal_of_Diversion_Tunnel_No._3_-_NARA_-_293780.jpg
Inlet_portal,_Diversion_Tunnel_No._4,_showing_bulkhead_gate_steel_erected_in_structure_-_NARA_-_293779.jpg
"Pouring_invert_concrete_in_diversion_tunnel_No._3._See_also_previous_photographs_for_more_detailed_description_of..._-_NARA_-_293694.tif
"Pouring_invert_concrete_in_diversion_tunnel_No._3._See_also_previous_photographs_for_more_detailed_description_of..._-_NARA_-_293694.jpg
Water_flowing_into_inlet_portal_of_Diversion_Tunnel_No._4_about_an_hour_after_earth_barrier_had_been_removed_by..._-_NARA_-_293777.tif
Water_flowing_into_inlet_portal_of_Diversion_Tunnel_No._4_about_an_hour_after_earth_barrier_had_been_removed_by..._-_NARA_-_293777.jpg
"Top-arch_form_in_position_under_portal_of_diversion_tunnel_No._2._Forms_of_trashrack_structure_abutment_are_seen."_-_NARA_-_293691.tif
Bulkhead_gate_structure_at_inlet_portal_of_Diversion_Tunnel_No._4._Semi-circular_structure_in_front_of_portal_is..._-_NARA_-_293759.tif
"Top-arch_form_in_position_under_portal_of_diversion_tunnel_No._2._Forms_of_trashrack_structure_abutment_are_seen."_-_NARA_-_293691.jpg
Bulkhead_gate_structure_at_inlet_portal_of_Diversion_Tunnel_No._4._Semi-circular_structure_in_front_of_portal_is..._-_NARA_-_293759.jpg
"High-scalers_at_work_above_inlet_portal_of_Diversion_Tunnel_No._1._Offset_at_right_marks_the_upper_reaches_of_the..._-_NARA_-_293711.tif
"High-scalers_at_work_above_inlet_portal_of_Diversion_Tunnel_No._1._Offset_at_right_marks_the_upper_reaches_of_the..._-_NARA_-_293711.jpg
"Cleaning_rock_floor_preparatory_to_pouring_invert_concrete_in_diversion_tunnel_No._4._Tractor_bulldozer_in..._-_NARA_-_293699.jpg
"Side-wall_concrete_in_place_in_diversion_tunnel_No._2_near_inlet._Photo_taken_after_fourteenth_day_after_pouring..._-_NARA_-_293667.tif
"Cleaning_rock_floor_preparatory_to_pouring_invert_concrete_in_diversion_tunnel_No._4._Tractor_bulldozer_in..._-_NARA_-_293699.tif
"Side-wall_concrete_in_place_in_diversion_tunnel_No._2_near_inlet._Photo_taken_after_fourteenth_day_after_pouring..._-_NARA_-_293667.jpg
"Looking_downstream_through_diversion_tunnel_No._2_from_point_near_inlet_portal._Tracks_over_which_gantry_crane..._-_NARA_-_293631.tif
"Sidewall_tunnel_forms_being_utilized_in_forming_bulkhead_gate_structure_at_inlet_portal_of_Diversion_Tunnel_No._1."_-_NARA_-_293738.tif
"Looking_downstream_through_diversion_tunnel_No._2_from_point_near_inlet_portal._Tracks_over_which_gantry_crane..._-_NARA_-_293631.jpg
"Sidewall_tunnel_forms_being_utilized_in_forming_bulkhead_gate_structure_at_inlet_portal_of_Diversion_Tunnel_No._1."_-_NARA_-_293738.jpg
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