Small employers hiring around Pittsburgh - first time posting

A friend who works at a local manufacturer says there are openings not advertised online. Any experience at all would help. They like a brief email with a résumé. Does anyone have similar leads?

Keep a list of who you contacted and when. It makes follow-ups easy.

A short email with two sentences about what you can do and your résumé attached worked for me. I followed up after a week.