Compile Contractor Email List

I'm looking for a comprehensive list of email addresses for business owners of contractors in New Jersey, specifically plumbers and electricians. I need this data for more than 500 businesses.

Requirements:
- Business type: Plumbers and electricians
- Minimum of 500 email addresses
- Additional details: Business name and owner's name

Ideal Skills and Experience:
- Experience with data mining or web scraping
- Attention to detail to ensure accuracy
- Ability to deliver within a set timeframe

Please provide samples of similar work if available.