If you do an image search for "cabbage worker" on Bing or Google, you can find a lot of very interesting, very different photos, spanning a great deal of time. Cabbage is eaten in almost every part of the world.
Well, it's interesting to me. Let me explain why it's related to "E-Waste" exports in general, and Joseph Benson in particular.

You can search "African cabbage farm", or "Guatemala Cabbage", or "Chinese cabbage harvest", or "Russian cabbage".
Want to guess where the cabbage photo to the left was taken? Florida.
There are some Australian aborigines cabbage worker photos from a century ago, and there is an ocean of cabbage photos on alibaba.com. Dried cabbage, chopped cabbage.
There are workers clinging to the sides of a moving cabbage truck in Guatemala. There are workers dressed in white smocks and moon suits in the Czech Republic.
I was searching "cabbage" on alibaba, and searching images for cabbage, because I wanted to find something as boring and non-controversial as... television repairman.
Africans, Chinese, and Latino workers who head to the Bright Lights, Big City places like Lima, Cairo, and Joseph Benson's Lagos, are usually making a choice
not to do something. They don't necessarily know what jobs they'll find in Accra, Kinshasa, or Dakar. But they don't expect to grow cabbage, or tubers, or sugarcane, or cotton.
"Ag Flight". It's basically exactly the same reason the USA cabbage farms import migrant labor from other countries.
I've got rural, subsistence farming roots. Three out of four of my grandparents lived on subsistence Ozark farms, and remained in farming until the 1960s (fourth grew up in journalism, and as a child of someone in the Indian Service). Agriculture's an honorable profession.
I was told the easiest thing to grow, if I chose to be a farmer, was probably cabbage. Cabbage is pretty virulent, cabbage crops can survive temperature disruptions. You won't make a lot of money on cabbage, but barring an Oklahoma dustbowl storm, you are unlikely to utterly fail. As I looked down at my grandpa Fisher's cabbage row, I thought it was the dullest, most boring thing in the universe.
Had Joseph Benson been a cabbage farmer, he would not have been the center of a sting by Greenpeace, Basel Action Network, Cahal Milmo (Independent), or BBC Panorama. Unfortunately for Benson, he invested in a different job abandoned by white people - one exoticized to titillate environmentalists.
Television repair.