Sulong Enjop <br/><br/>
test drilling using reska 30/25 cdss rig exploration test well drilling and construction kg Nangka Matang Kuching division Sarawak RAK (E1 / E11) 

 - GSKL 037/17/204 
 - Kuala Lumpur  Jabatan Penyiasatan Kajibumi Malaysia  1991 
 - ill:44p. 29.8 cm