But their the object theiró trouble that they had with the first rock bits was that they would cut the rock all right, but if they run into a streak of gumbo, why, it would ball up, but they-- I understand that they have eliminated that now to a certain extent. If they have what is known as hard gumbo, why, they'll cut that like nobody's business, and then if they hit a rock, why, they go on about their business. In other words, after they pass four and 5000 feet, why, it's pretty near hard enough with a rock bit then as far as they go. Of course, they have streaks of sand and then they have loose shale that they' don't do so well in, I don't think. Now, I understand. I haven't been on a drilling rig floor in pretty near 35 years; that is, as far as being there to work and know what's going on. You see, afó in 1909, I went to rig building, back in the wooden derrick days, and I built wooden derricks up until 1935* But just from observation, being in the oil field, why, I know that the hard shale and other formations that's mixed up with these rocks, that the rock bit takes that like nobody's business and they don't have to look back, but if they find loose shale, why, they've got to come out then and do something. They usually do that with a fishtail bit and as soon as they get back to a hard formation, why, they run their rock bit back and go on. O.- What about Wynn and McLaughlin Machine Shop here? B.- Well, that shop was built here, I think, in probably, 19ó