I used to use python/zope/plone for my phd (+/- construction industry plus semantic web), currently I'm working for zest software, http://zestsoftware.nl .
I've submitted a talk proposal for the python+science track: accepted! It is about the construction industry + semantic web + plone.
I've made notes on the conference on my weblog.
Before the conference: PloneOrgMigration
After the conference: PloneSeleniumSprint