吉(ji)成(cheng)井(jing)(jing)(jing)鹽(yan)(yan)作坊遺(yi)址, 井(jing)(jing)(jing)鹽(yan)(yan)生(sheng)(sheng)產(chan)(chan)遺(yi)址。位于四(si)(si)川自貢(gong)市(shi)大(da)安(an)區(qu)楊家沖上鳳嶺。占地面(mian)積25畝,由吉(ji)成(cheng)井(jing)(jing)(jing)、裕成(cheng)井(jing)(jing)(jing)、益生(sheng)(sheng)井(jing)(jing)(jing)、天成(cheng)井(jing)(jing)(jing)等(deng)四(si)(si)口鹽(yan)(yan)井(jing)(jing)(jing)組成(cheng),留存有四(si)(si)座天車(井(jing)(jing)(jing)架(jia))、碓房(fang)、灶房(fang)、鹽(yan)(yan)倉等(deng)附屬(shu)鹽(yan)(yan)業生(sheng)(sheng)產(chan)(chan)設施。吉(ji)成(cheng)井(jing)(jing)(jing)原(yuan)名裕豐(feng)井(jing)(jing)(jing),開辦于清(qing)(qing)咸(xian)豐(feng)、同(tong)治年(nian)問,井(jing)(jing)(jing)深(shen)(shen)1 108米(mi)(mi),井(jing)(jing)(jing)徑(jing)(jing)10厘(li)米(mi)(mi),天車高(gao)(gao)12米(mi)(mi)。裕成(cheng)井(jing)(jing)(jing)原(yuan)名裕順井(jing)(jing)(jing),光緒(xu)年(nian)問由陜(shan)幫(bang)李世德號開辦,井(jing)(jing)(jing)深(shen)(shen)1 213米(mi)(mi),井(jing)(jing)(jing)徑(jing)(jing)9.93厘(li)米(mi)(mi),天車高(gao)(gao)18米(mi)(mi)。益生(sheng)(sheng)井(jing)(jing)(jing)原(yuan)名西江井(jing)(jing)(jing),咸(xian)豐(feng)、同(tong)治年(nian)間由陜(shan)幫(bang)雒永豐(feng)號開辦,井(jing)(jing)(jing)深(shen)(shen)1 018.8米(mi)(mi),井(jing)(jing)(jing)徑(jing)(jing)10.08厘(li)米(mi)(mi)。天成(cheng)井(jing)(jing)(jing)開鉆于同(tong)治六年(nian)(1867),民(min)國二年(nian)(1913)投(tou)產(chan)(chan),井(jing)(jing)(jing)深(shen)(shen)1 188米(mi)(mi),井(jing)(jing)(jing)徑(jing)(jing)10.7厘(li)米(mi)(mi)。歷經一百(bai)余年(nian)的(de)生(sheng)(sheng)產(chan)(chan),保(bao)存基(ji)本完好,系極(ji)其(qi)珍貴的(de)清(qing)(qing)代(dai)(dai)井(jing)(jing)(jing)鹽(yan)(yan)生(sheng)(sheng)產(chan)(chan)遺(yi)址,為(wei)清(qing)(qing)代(dai)(dai)自貢(gong)社會經濟發(fa)展的(de)“活化(hua)石(shi)”。2003年(nian)4月(yue),自貢(gong)市(shi)人民(min)政(zheng)府第三次常務會議決定由自貢(gong)市(shi)文(wen)化(hua)局(ju)對其(qi)進行保(bao)護管理。2005年(nian),自貢(gong)市(shi)文(wen)化(hua)局(ju)委托(tuo)自貢(gong)市(shi)鹽(yan)(yan)業歷史博物館代(dai)(dai)為(wei)管理。