DW1 admitted under cross-examination [NOP pages 280 -to 282]- Now, here it says further from your explanation, Dust explosion can occur where dispersed powdered combustible material is present in high concentrations in the atmosphere, right. Now my question to you is that, in terms of this incident and your report, are you aware if Mr. Andrew Yeong actually took a sample of the dust particle, that is reflected in this report? Did he even take a sample at all? So, he did not take any sample of debris or dust from the furnace, correct? Now, he's in this particular quotation, you said that dust explosion can occur where dispersed powder combustible material, right, present in high concentrations in the atmosphere, do you know how high a concentration of that material is before a combustion can occur? I am not an expert on explosion on this. Again, there is no investigation into how high concentration is required, isn't it right? Correct. MSM Report’s photos are not reliable