Show EXPERIMENTS WITH OIL SHALE SHE Progress of or the bureau of mines minCh in Its experiments with oil shale is steady At the various experiment stations at Boulder Colo Salt Lake and the University of Indiana data concerning the best methods ot of handling the mineral are being ac ac- In Iii the course of the cooperative oil shale Investigation at th the Boulder Bould Bould- er Colo filed office of the United States bureau of mines experimental experiment experiment- al work with the horizontal retort on Colorado standard shale has been completed Lat Later r developments confirm the earlier work worIc on fractional While the Noil oll produced at different temperatures during the same run varies somewhat in quality the amount of variation is apparently not enough to be tak taken n advantage of commercially During tho the course of or the shale oil condensation studies of the bureau of mines at Salt Lake City distillations distillations have been made with both the rotary and assay retorts to study th the effect of slow and rapid condensation condensation condensation condensa condensa- tion of f oil vapors while using the refluxing rc- rc fluxing and continuous types of con con- A study of the rate of flow of heat through solid soUd and broken masses masses masses mass mass- es of oil shale has also been made by the bureau of mines at the local sta sta- tion An heater was devised demised which permits the mass of shale to tobe tobe tobe be heated ta to any desired rate or the heating surface may nay be maintained constantly at any desired temperature tempera tempera- ture Results indicate that it lil m probably be impracticable lo to heat by masses of shale shala more than three inches thick where agitation agitation agi agi- taU tation on of the mass or convection are not applied to as assist the l Uton tm of heat has lIaa been separated from Utah and Scottish shale in audit ion to standard Colorado shale and com com- analyses have been made t by bythe y the tile bureau of mines at Boulder Colo The results have belie and will soon be ready for public publication All difficulties have apparently apparently apparently ap ap- ap- ap been overcome except that flint due to the difficulty of distributing the nitrogen At the Boulder Colo office of the bureau of mines the testing of Utah in assay retorts has 1 practically been completed This work f follows ll ws the procedure used ell on the Colorado shale and indicates clearly rile chic differences in tre oils oU pro pio- 10 d ce f from the two T o of mining i Indiana hiie 11 ie oil to o. o made in the course cours if the tte cooperative work between the Indiana Indiana In Tn- diana university and th the United States bureau of mines have demonstrated demonstrated demonstrated dem dem- that this oil oU can cau be he made by this treatment exactly as til the oils from the western are made by a 0 similar treatment Work has lIas been done at Colo by the bureau of on the experimental refining of or shale oil naptha The work has been somewhat somewhat somewhat some some- what limited on account or ut inadequate Inadequate quate equipment but cut with the equipment now ordered should progress progress progress pro pro- gress rapidly Work York done so far Indicates indicates indicates In in- that for this particular naptha naptha naptha nap nap- tha at least best results are obtained obtained obtained ob ob- by using 70 per cent sulphuric acid followed by the regular water and caustic soda wash and doctor treatment The naptha refined with 70 per cent acid has held its color much better than that refined with acid of greater or less strength and thus far it has deposited no gum |