Document Qk3y2K1ROGoxoGdwq3kg0yVbR

1 Q How about coal dust? Page 3216 2 A That is another question as to whether or 3 not coal dust does or whether the silica content of 4 the coal dust, and that is a question that is 5 probably -- it may not be answerable. 6 Q Something about the dust in coal mining at 7 least can produce fibrosis? 8 A It is likely to be the silica content of 9 that. 10 Q All right. 11 Now, what is this term? What is a 12 teratogen? 13 A Teratogen is a chemical that causes the 14 creation of classical terms monsters. 15 Q Monsters? 16 A Yes, let me explain, please. 17 In the body, after a conception takes place, 18 there is a period of organic genesis where each organ j 19 of the system is being generated. 20 And during the genesis of that particular 21 organ system, if it is affected by a particular j