speaking not as a commercial roaster but as a cafe owner, I would far prefer it if a customer raised there legitimate concerns with me and provided me with an opportunity to address and remedy the situation I stopped reading social media comments about my cafe a fair while ago, in part because some were just vile and vindictive, but others were just blatantly untrue, referencing menu items that hadn't even been on the menu for a year or more - which is a shame really as others were lovely and endearing social media can make or break a business, but mistakes to happen in any environment, and, as I said, a right of reply, combined with the ability to address and remedy a situation ought to be extended to the party in question I for one would also like to here Brother's take on the situation Over the years I've occasionally had stones and once a piece of copper wire go through the grinder, and it is not a pleasant experience - but in most instances it is not life threatening to the grinder Personally I'd be heading back to the place of purchase to ask for a refund or a new and untainted product ACg