REMOVE

1. soil
2. rock
3. tools
4. construction sites
5. black-and-white film

WHAT

1. banks (landforms) (1)
2. construction equipment (1)
3. cranes (equipment) (1)
4. Grand Coulee Dam (dam) (1)
5. hills (1)
6. machinery (1)
7. men (male humans) (1)
8. scaffolds (1)
9. sky (1)
10. towers (single built work … (1)
11. Visual Works (hierarchy n … (1)
12. wood products (1)
13. workers (1)

WHERE

1. Grand Coulee, Washington (1)

WHO

1. Clyfford Still; Still, Cl … (1)
2. Still, Clyfford (1)

WHEN

1. 1936 (1)
2. 1937 (1)
3. ca. 1936 - 1937 (1)