I never knew they used any peated malt in Bushmills, although I have tried some with some smokey notes. Found this on Royal Mile website:
The first official reference to the distillery was in 1784 when it was registered as a company, making it the oldest existing distillery in Ireland. Much has been written about '1608' and while the company actually uses this date on their bottles, it actually refers to when a licence was passed to distil whisky in the area of Bushmills (common throughout Ireland at this time) rather than just at the Bushmills distillery. This Irish distillery is similar to a Scottish distillery in style although it does triple distill its spirit. The floor maltings were in use up until 1972, when the company found that it would be more economical to use commercial maltings. Curiously Bushmills uses a mix of two malts - one entirely unpeated and another slightly peated. Alongside Bushmills' single malt expressions, the blended whiskies Black Bush and Old Bushmills are produced using grain from Middleton.

