The Great Canadian shield

The rock of the great Canadian Shield was formed two billion years ago. Now its many minerals—gold, nickel, copper, mica, feldspar, iron and magnesium—are mined as essential ingredients in Canadian industry.

Credits

Directed by
Laurence Hyde

Sources

  1. 16mm Filmography (legacy record) — title, description, catalog record
  2. Wikidata · Q123306619 ↗ — year, creator, country, credits