Sulong Enjop <br/><br/>
Test drilling using reska 30/25 cdss ric exploration test well drilling and construction Kg Nangka Matang Kuching division Sarawak 

 - GSKL 037/17(204) 
 - Ipoh Perak  Jbatan Penyiasatan Kajibumi Malaysia  1991 
 - ill:44p. 29.8 cm