Dear All, It's my request to all to illuminate me *about Archean BIF's and their associated sediment facies in Pilbara craton, Australia* (Paper references, Papers, Abstracts, book references etc.) especially of *Pyramid hill and Coucal formation.* Regads, Trisrota -- Trisrota Chaudhuri, JRF of Indian Statistical Institute and Jadavpur University, Kolkata, India.