Dwight MacGillivary Welding and Metal Fabricating Ltd is a family owned and operated business established in 1978. We are located in Advocate Harbour in Nova Scotia. As a family business we have grown large enough to provide out standing products, but small enough to still care passionately about our customers, existing and new. e manufacturer Mac Trailers and the Mighty Mac Log Splitter .ur high quality trailers are built with great attention to detail. You will be pleased to find that your Mac Trailer are a more than capable addition to your business. For your convenience we are also equipped to repair or refurbish your current trailer. more... See more text