In 1927 he proposed the Pecos classification system, a regional archaeological timescale widely used by later workers in the Pueblo region.
They were rescued, but a few months later workers in a New Zealand mine were less fortunate.
Later, workers in the private sectors began to complain to their employees about the need for decent accommodation.
One year later, workers in Gdansk created the Solidarity trade union, a movement also devoted to economic justice, and Communism in Eastern Europe was suddenly living on borrowed time.
Eight years later, workers in an agrarian reform co-operative whose land once belonged to the Salaverrias barely escaped an assassination attempt.
Four years later, workers in Oregon brought a successful class-action suit against Taco Bell, making claims very similar to Alicia Sloan's -- that Taco Bell managers would tweak employees' time cards and not pay them the overtime wages they were owed.
One year later, workers filled in another questionnaire.
In later scenes, tired workers stand proudly in all that is left, a foundation.
The album closed with a cover of a minor soul classic, Timmy Thomas's "Why Can't We Live Together?," a direct plea for racial harmony that hinted at a political sensibility, easier to hear in later songs about immigrant workers and slaves.
The ideal is to facilitate far more part-time work in later life, with employers and workers having a mature discussion about the best way to retain workers' skills as they reach their 60s.
In later editions, it read: "Poznan workers speak out against grievances".
