REMOVE

1. hills
2. men (male humans)
3. construction equipment
4. machinery

WHAT

1. banks (landforms) (1)
2. black-and-white film (1)
3. construction sites (1)
4. cranes (equipment) (1)
5. Grand Coulee Dam (dam) (1)
6. rock (1)
7. scaffolds (1)
8. sky (1)
9. soil (1)
10. tools (1)
11. towers (single built work … (1)
12. Visual Works (hierarchy n … (1)
13. wood products (1)
14. 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)