Show MONTHLY YIELDS OF FOUR BIG BIGI PORPHYRIES IN T THREE YEARS I l TH YRS Production by months mont of o the te four tacT bl big porphyries Utah Uth Chino Ray nay and andas pounds Nevada Con Cn in i the t past p three and ad a quarter years yes was as S follows In UA COPPER 1919 1918 1917 no Januar Z 13 18 March Marh 1561 April HI 11 1 8 Apri May lay T I Juno Juno July July 8 Aug August 0 Augst September October fr November December r p. 16 cm o COPPER January January February t I March March 37 I IAP April 6 Ma day i 63 June 1 7 u. u I- I I Augast i t September Ot t October L November 1 t December BAN R CONSOLIDATED I Ju January j February March 37 2000 3 a April I May Apri aY Juno JUn mi 7 July July- August I Augst September 7 October I I December I L A i. i CONSOLIDATED r January u. u t February 6 I t March 5 L April Mar 67 t May L J. J Juno Jutie My una July G. 7 uly August G. i I Augst September 7 1 a October I November 70 a J I 1 I l December e 45 a aI |