Nine Bifaces; Acheulean; 700;000-200;000 B.C.; Acheulean; Flint; quartzite; 2018.51.1: H. 10 1/8 in. (26 cm); W. 4 5/8 in. (11.7 cm); D. 1 1/5 in. (4 cm); Wt. 2 lb. 12 oz. (1240 g); 2018.51.2: H. 9 1/2 in. (24 cm); W. 4 1/4 in. (10.8 cm); D. 1 5/8 in. (4.1 cm); Wt. 2 lb. 4 oz (1029 g); 2018.51.3: H. 9 1/2 in. ( 24 cm); W. 5 5/16 in. (13.1 cm); D. 1 1/16 in. (2.7 cm); Wt. 1 lb. 13 oz. (833 g); 2018.51.4: H. 5 3/16 in. (13.6 cm); W: 3 7/16 in. (8.8 cm); D: 1 1/4 in. (3.2 cm); Wt. 12 oz. (329 g); 2018.51.5: H. 5 5/8 in. (14.3 cm); W. 2 11/16 in. (6.8 cm); D.1 11/16 in. (4.25 cm); Wt. 12 oz. (336 g); 2018.51.6: H. 5 1/16 in. (12.85 cm); W. 3 1/8 in. (7.95 cm); D. 1 7/8 in. (4.8 cm); Wt. 15 oz. (437 g); 2018.51.7: H. 5 1/8 in. (12.95 cm); W. 3 3/8 in. (8.6 cm); D. 1 in. (2.5 cm); Wt. 9 oz. (266 g); 2018.51.8: H. 4 11/16 in. (11.9 cm); W. 3 5/16 in. (8.5 cm); D. 1 in. (2.5 cm); Wt. 10 oz. (290 g); 2018.51.9: H. 5 1/2 in. (14 cm); W. 3 7/16 in. (8.75 cm); D. 1 1/2 in. (3.8 cm); Wt. 13 oz (367 g); Tools