Engineering and Contracting . Fig. 4—Team Hauling Spoil Cars. ft. The excavation for this is being made by two 15-tonrevolving Erie shovels having % yd. dippers. The spoil ishauled by wagons or small dump cars, depending on con-ditions, and is used for making the artificial hills at thesides of the park. The digging is in hard clay. The dump cars are of the Western type, IVi cu. yd. ca-pacity. They are hauled in 5-car trains by a team ofhorses. The track is 20-in. gage, made up of 20-lb. railsspiked to 36-in. long Fig. 5. The first shovel began work in May. Its record for fivemonths is
Engineering and Contracting . Fig. 4—Team Hauling Spoil Cars. ft. The excavation for this is being made by two 15-tonrevolving Erie shovels having % yd. dippers. The spoil ishauled by wagons or small dump cars, depending on con-ditions, and is used for making the artificial hills at thesides of the park. The digging is in hard clay. The dump cars are of the Western type, IVi cu. yd. ca-pacity. They are hauled in 5-car trains by a team ofhorses. The track is 20-in. gage, made up of 20-lb. railsspiked to 36-in. long Fig. 5. The first shovel began work in May. Its record for fivemonths is as follows: Actual time, T_,oads Cu. yds. per days. per day. 9-hour day. Mav . 1H4 630 441 .Tune 17^4 987 987 Julv 24V4 693 485 August 261^ 954 668 September 22% 840 588 This shovel loaded into wagons and during July, Augustand September made many moves. Most of its cuts were5 ft. to 6 ft. deep and 170 ft. to 250 ft. long. The second shovel was placed in operation in loaded into cars and had an 8-ft. cut 30 ft. wide thattook from 8 to 10 days to make. The yardage moved bythis shovel in August and September was as follows: -Actual time. Load Tu. yds. per days. pftr day. 9-hour day. Augrust 19% 872 610 .September 22% 968 678 The park is being built by day labor by the WestChicago Park Commission. A. C. Shrader, Chief Engineerand Superintendent of the Commission, is in charge of thedesign and the construction work. 550 BELT CONVEYOR FOR TRANSPORTING GRAVELTO STORAGE BINS. An unusually interesting method is
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