I am stuck on 3 today - any help appreciated. 19d Type of sandstone block used during the construction of Stonehenge and Avebury (6) - I have S?R?E? 47d Rhododendron-like plant, one of the flower...
2 left 20ac Motorised bicycle ridden by a human "slipstream" in keirin racing and motor-paced road races (5) ?E?N? 51dn Ancient Roman unit of weight that was the forerunner of the pound (5)...
Must be getting senile in my old age - stuck on two again. 36d Greenish amphibole silicate mineral which is one of the recognised forms of asbestos. (10) I have ?C?I?O?I?E. 58a. Term for something...