In 1971, German Refuse Collection inspired Giger to create the Passages series.
PASSAGE 71 Portfolio
Portfolio of 4 multi-colored prints; edition of 70 + XX / fire destroyed some; 1971 ; 90x70 cm
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PATENT OCHSNER 1972
"Ochsner" was the brand of Swiss refusal collection trucks.
Patent Ochsner 1972
1972, sieve print, edition of 90 + XII, 80 x 60 cm; colors : red and wine red.
There is also a known 90 x 70 cm trial print in silver:
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PASSAGE 73
Newspaper print, 1973, edition of ca. 150, 48 x 30 cm
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PASSAGE 73
Passage 73; work no. 150; print; edition of 180; 1973 59x42 cm