I think this is the first poem of Sharif's I've read.
Her use of the word relief made me go look it up in a dictionary to learn all its meanings.
I can't remember the last time I read about tanners; it reminds me of learning about Butcher Town in San Francisco, a neighborhood and a time I've come across only rarely in reading about the history of the city.
The quick, almost abrupt ending is such a shift from the rest of the poem, that long history and then sudden (but also long, just compressed) change.
photo of soy field by Andrea Pavanello, Milano., CC BY-SA 3.0 IT , via Wikimedia Commons