Contact Us Scale & Corporate Office Direct Numbers Location Phone Email Sylvania Minerals 734-783-7425 sylvania-scale@greatlakesagg.com Taylor 313-253-5460 taylor-scale@greatlakesagg.com Rochester Hills/Crooks Rd 313-305-0513 crooks-scale@greatlakesagg.com Salem/Chubb Rd 810-217-9481 chubb-scale@greatlakesagg.com New Haven 248-244-3425 Highland Park 248-244-3466 highland-scale@greatlakesagg.com Main Office 734-783-7400 Mark Parran 734-783-7400 mparran@greatlakesagg.com Raymond Wright - Safety Coordinator 734-783-7418 rwright@greatlakesagg.com Mike Parsons - Sales Manager 734-783-7413 mparsons@greatlakesagg.com Art Martinez - Scale Manager / IT Support 734-783-7412 amartinez@greatlakesagg.com Becky Henderson - Invoicing / Tickets / AP 734-783-7416 rhenderson@greatlakesagg.com Melissa Zielinski - Credit / Receivables / HR 734-783-7420 mzielinski@greatlakesagg.com Bill Begley - Sylvania Quarry Manager 734-783-7400 bbegley@greatlakesagg.com Tom Downs - Recycled Agg Plant Manager 734-783-7417 tdowns@greatlakesagg.com Keith Childress - Quality Control Manager 734-783-7411 kchildress@greatlakesagg.com Quality Control Lab 734-783-7410 kchildress@greatlakesagg.com