Black Olive Grill is a division of Canada's Sherwood Industries located in British Columbia. Since 1989 Sherwood has manufactured wood, gas and wood pellet fueled heating products and won several awards. More recently they entered into the BBQ market and created quite a stir with their unique pellet burning kamado. Alas, Black Olive appears to be fading into the annals of "Ideas that looked good on paper".
They also offer some accessories like rib racks and pizza stones.