zoom on pour small (1770/1776):
1769: Zoom on pipe
1768: zoom on No 4 north wall
1767: Zoom on N wall of 4 4th floor
1766: Zoom on corner S wall of 4
1765: zoom on boom
1764: Zoom on 5th floor N
1763: Zoom on 5th floor N small
1762: Zoom of #3 wall collapse
1761: zoom fire
1760: zoom fire small
1771: zoom on pour
1772: Zoom on smoke at 1
1773: zoom on truck entrance small
1774: zoom on truck entrance
1775: zoom on z's pic
1776: zoom
